Passing blood clots after a D&C is a normal part of healing for most people, driven by the fact that the procedure creates a raw, bleeding surface inside the uterus that needs days to weeks to repair itself. Small clots during that window are the body’s expected response to an open wound in a blood-rich organ. Larger, persistent, or foul-smelling clots, however, can signal a complication that needs medical attention, and knowing the difference matters more than most post-procedure instruction sheets convey.
What a D&C Does to the Uterine Lining
A D&C, short for dilation and curettage, involves dilating the cervix and scraping or suctioning tissue from the inner wall of the uterus. It is performed for a range of reasons: completing an incomplete miscarriage, managing abnormal uterine bleeding, treating a molar pregnancy, or sampling the endometrium for diagnosis. Regardless of the reason, the end result is the same. The endometrium, the tissue lining the inside of the uterus, is partially or fully removed, leaving an exposed surface similar to a scrape on the inside of any other organ.
The uterus has an unusually rich blood supply. Spiral arteries feed the endometrium, and once that lining is disrupted, these arteries are open and bleeding. Normally, the muscular wall of the uterus contracts after a procedure or delivery, squeezing those arteries shut and slowing blood flow enough for clotting to take hold. When those contractions are strong and the wound is uncomplicated, bleeding tapers gradually over several days, and any clots that form are small. When contractions are weak or something else goes wrong, bleeding can be heavier and clots larger.
How Clots Form During Recovery
Blood that pools anywhere in the body tends to clot. Inside the uterus after a D&C, blood from the exposed spiral arteries collects in the uterine cavity. If it sits long enough before draining through the cervix, it coagulates into a semi-solid mass. When the uterus contracts, it squeezes that clot out, and you pass it vaginally. This is the same basic process that happens with a heavy menstrual period, though the underlying trigger is surgical rather than hormonal.
The composition of these clots is worth understanding. Research on menstrual clots has shown that they are not true fibrin clots of the kind that form when you cut your finger. Instead, they tend to be aggregations of red blood cells bound together with mucoid substances, and coagulation factors like fibrinogen are largely absent from menstrual discharge.1American Journal of Obstetrics and Gynecology. Observations on the clotting of menstrual blood and clot formation Post-D&C clots are a slightly different story, though. Because the tissue disruption is surgical and goes deeper than a normal menstrual shedding, the clots that form can include actual fibrin from wound healing alongside the red-cell aggregations typical of uterine bleeding. The jelly-like clots you might see in the first few days are often a mix of both.
For most people, clot passage peaks in the first two to five days and then gradually decreases. Spotting or light bleeding can continue for two weeks or even a bit longer. Clots the size of a small coin or smaller during that early window are usually nothing to worry about. The body is doing exactly what it should: clearing old blood from a healing wound.
Retained Tissue and Persistent Clotting
One of the more common reasons clots continue well beyond the expected recovery window is retained products of conception, a clinical term for fragments of pregnancy tissue that the D&C did not fully remove. Even a skilled surgeon working with good visualization can leave behind small amounts of tissue, particularly in early pregnancy losses where the tissue is soft and can fragment easily. These leftover pieces prevent the uterus from contracting properly and keep the wound from closing, which means the bleeding and clotting continue.
In a study of patients with retained products of conception after first-trimester miscarriage or termination, about 86% presented with ongoing vaginal bleeding. Women who bled had markedly lower progesterone levels compared to those who did not, suggesting that the hormonal environment plays a role in whether retained tissue triggers symptoms.2Taiwanese Journal of Obstetrics and Gynecology. Efficacy of estrogen-progestogen therapy for women with vascular retained products of conception following miscarriage or abortion When the retained tissue develops its own blood supply from the uterine wall, the situation becomes more complex. These vascular retained products can bleed heavily and unpredictably, sometimes requiring a second procedure under ultrasound guidance to safely remove the tissue without excessive blood loss.3Ultrasound in Obstetrics & Gynecology. Diagnosis and management of patients with enhanced myometrial vascularity associated with retained products of conception
The practical takeaway: if you are still passing clots two or more weeks after a D&C, especially if the clots are getting larger rather than smaller, retained tissue is one of the first things your doctor will investigate, usually with an ultrasound.
When Blood Gets Trapped Inside the Uterus
A less common but startling complication is hematometra, which is a collection of blood that accumulates inside the uterine cavity because it cannot drain properly through the cervix. After a D&C, the cervix typically stays slightly open for a short time to allow blood to exit. Occasionally, though, the cervix swells shut or a blood clot lodges in the cervical canal, effectively plugging the drain. Blood continues to pool behind the blockage, and pressure builds.
In one documented case, a woman developed hematometra within 48 hours of a suction evacuation for a missed miscarriage. She presented with sharp lower abdominal pain, low-grade fever, and pain during urination and bowel movements. A transvaginal ultrasound confirmed the trapped blood, and a repeat evacuation removed roughly 50 milliliters of dark blood clots from the uterine cavity.4PubMed Central. Uncommon Sequela of Miscarriage: A Case of Hematometra The key sign that distinguishes hematometra from normal recovery is increasing pelvic pain with little or no external bleeding. If you feel worsening cramping but notice that your bleeding has suddenly stopped or decreased dramatically, that combination warrants a call to your provider.
Infection and Abnormal Bleeding
Any time an instrument enters the uterus, there is a small risk of introducing bacteria. Endometritis, an infection of the uterine lining, can develop in the days following a D&C and disrupt the normal healing process. The inflamed tissue bleeds more easily and heals more slowly, which can lead to prolonged clot passage and discharge that looks or smells different from normal post-procedure bleeding.
Symptoms of endometritis can include fever, pelvic pain, tenderness when the uterus is pressed on, and a purulent or foul-smelling vaginal discharge.5Ultrasonography. Pelvic ultrasonography of the postpartum uterus in patients presenting to the emergency room with vaginal bleeding and pelvic pain If the uterus stays enlarged longer than expected after the procedure, that is another clue. Endometritis is typically treatable with antibiotics, but it needs to be caught. Untreated, it can progress to a more serious pelvic infection. The combination of fever and worsening clots or foul-smelling discharge in the first week or two after a D&C is a clear reason to seek care promptly.
Pre-Existing Bleeding Before the D&C
Sometimes the clots you pass after a D&C are not entirely new. If the procedure was done for a miscarriage, there may have been bleeding happening well before the surgery. Subchorionic hematomas, collections of blood between the early pregnancy membranes and the uterine wall, are common in patients with threatened miscarriage and are usually picked up on ultrasound.6PubMed Central. Subchorionic hematoma: Research status and pathogenesis If a large hematoma was present before the D&C, that accumulated blood may drain out alongside the blood from the procedure itself, making the clotting look more dramatic than it otherwise would be.
This is one reason why the volume and character of post-D&C bleeding varies so much from person to person. Someone whose miscarriage was discovered incidentally on a routine scan, with no prior bleeding, may have a relatively clean recovery. Someone who had been bleeding for days or weeks before the D&C may pass significantly more clotted blood afterward, simply because there was more old blood in the system to begin with.
How the Type of Procedure Affects Bleeding Patterns
Not all D&Cs are performed the same way. The traditional method uses a sharp metal curette to scrape the uterine wall. Many practitioners now use electric suction curettage instead, which applies negative pressure to aspirate tissue rather than scraping it. You might wonder whether one approach causes more bleeding or clotting than the other. A study comparing sharp curettage to electric suction curettage in patients being evaluated for abnormal uterine bleeding found no differences in blood loss, operative time, or complication rates between the two methods.7PubMed. Sharp Versus Electric Suction Curettage in Gynecologic Patients Undergoing Evaluation for Abnormal Uterine Bleeding So the choice of instrument, at least between these two common options, does not appear to meaningfully change your post-procedure bleeding experience.
Where the difference becomes more apparent is between surgical and medical management of pregnancy loss. Medical management with medications like misoprostol tends to produce longer bleeding and more clot passage than surgical evacuation. A Cochrane systematic review found that the duration of bleeding was longer in medical abortion groups compared to vacuum aspiration.8PubMed Central. Medical versus surgical methods for first trimester termination of pregnancy For second-trimester procedures, another systematic review found that surgical approaches were associated with less total blood loss, with an average estimated difference of about 60 milliliters less blood lost compared to medical methods. Two weeks after the procedure, people who had medical management were more likely to report bleeding heavier than a normal period.9PubMed Central. Surgical versus medical methods for second-trimester induced abortion
If you took misoprostol or a similar medication before your D&C, or if medications were used as part of a combined approach, that can partly explain heavier clotting in the days afterward. These drugs cause strong uterine contractions to expel tissue, and the process can continue generating clots even after the surgical portion is complete. In clinical practice, the presence of blood clots after medical management is sometimes treated with additional uterotonic medications to encourage the uterus to contract and clear the remaining material.10Middle East Fertility Society Journal. Vaginal misoprostol versus vaginal surgical evacuation of first trimester incomplete abortion: Comparative study
When Clots Mean You Should Call Your Doctor
Most people recovering from a D&C will pass some clots and do not need to do anything about it beyond resting and monitoring. But certain patterns are red flags. Here is a practical list of signs that warrant contacting your healthcare provider:
- Large clots: Anything consistently bigger than a golf ball, or clots of any size that keep coming after the first week, suggests incomplete healing or a complication.
- Soaking through pads: If you are filling more than one thick pad per hour for two or more consecutive hours, that level of bleeding can lead to significant blood loss and needs evaluation.
- Fever: A temperature above 100.4°F (38°C) in the days after a D&C raises concern for infection.
- Foul-smelling discharge: Normal post-D&C bleeding has a mild metallic smell. A strong, unpleasant odor points toward infection.
- Worsening pain with decreased bleeding: As discussed with hematometra, increasing cramping alongside a sudden drop in bleeding can mean blood is trapped inside the uterus.
- Bleeding that stops and restarts heavily: A brief pause followed by a new surge of heavy bleeding or clots, especially more than a week out, may indicate retained tissue.
None of these signs guarantee something serious is wrong, but all of them are reasons your provider would want to hear from you rather than have you wait it out.
The Role of Uterine Contractions in Recovery
One thing that often surprises people after a D&C is the cramping. The uterus is a muscular organ, and just as it contracts during a menstrual period to shed the lining, it contracts after a D&C to close off the exposed blood vessels and push out any remaining blood and clot material. These contractions are actually protective. When the uterine muscle squeezes down effectively, it pinches the spiral arteries shut and reduces blood flow, which gives the clotting system a chance to seal the wound.
When this contraction response is weak, a condition sometimes called uterine atony, bleeding can be heavier and more prolonged. Atony is more commonly discussed in the context of postpartum hemorrhage, but the same principle applies after any procedure that leaves the uterine cavity open and bleeding. Risk factors include a uterus that has been stretched by multiple pregnancies, a prolonged procedure, or the presence of fibroids that interfere with the muscle’s ability to contract uniformly. Medications called uterotonics, including methylergonovine and oxytocin, can be given to stimulate stronger contractions if the uterus is not firming up on its own.
For you as a patient, the practical implication is that the cramping you feel after a D&C is doing something useful. Taking anti-inflammatory pain relievers can help with discomfort, but if your provider specifically gave you a medication to help the uterus contract, taking it as directed is one of the more concrete things you can do to reduce clot formation and speed recovery. Gentle activity like walking can also help the uterus contract, while heavy lifting or vigorous exercise in the first week may increase blood flow to the pelvis and work against the process.