You can check your fertility through a combination of at-home tracking methods and clinical tests ordered by a doctor or fertility specialist. The process typically starts with simple observations you can do yourself, like monitoring your cycle and ovulation signs, and moves to blood work and imaging if you need a more complete picture. A healthy, fertile 30-year-old woman has about a 20% chance of conceiving each month, so understanding where you stand can help you plan or identify potential issues early.
What You Can Track at Home
Before scheduling any appointments, your own body provides useful fertility signals. The two most accessible methods are basal body temperature (BBT) tracking and cervical mucus observation. Both help confirm whether you’re ovulating, which is the single most important factor in natural conception.
For BBT tracking, you take your temperature with a sensitive thermometer every morning before getting out of bed. After ovulation, your resting temperature rises slightly (about 0.5 to 1 degree Fahrenheit) and stays elevated until your next period. This shift confirms ovulation happened, though it only tells you after the fact, not in advance.
Cervical mucus changes are more useful for predicting ovulation in real time. Just before ovulation, mucus becomes noticeably thinner, more slippery, and stretchy, similar to raw egg whites. After ovulation, it thickens and becomes less noticeable. Tracking these changes over a few cycles helps you identify your fertile window. With typical use, these fertility awareness methods aren’t perfectly precise: 12 to 24 out of 100 women relying on them will become pregnant within a year, which tells you something about both their usefulness and their limitations as tracking tools.
Over-the-counter ovulation predictor kits (OPKs) detect a surge in luteinizing hormone in your urine, which typically happens 24 to 36 hours before ovulation. These are widely available at pharmacies and give you a clearer heads-up than mucus or temperature alone.
Blood Tests That Measure Fertility Hormones
If you want a more objective assessment, hormone blood tests are the foundation of a clinical fertility workup. Timing matters: three key hormones, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and estradiol, are checked on cycle day 3, which is the third day of your period (counting from the first day of actual blood flow, not spotting). These levels together reveal how hard your body is working to stimulate egg development. Elevated FSH, for instance, can signal that your ovaries need more stimulation than usual to produce eggs, which may indicate diminishing ovarian reserve.
Another important blood test measures anti-Müllerian hormone (AMH). Unlike the day-3 tests, AMH can be drawn at any point in your cycle because it stays relatively stable. AMH reflects the size of your remaining egg supply. Low levels suggest a smaller reserve, while very high levels can sometimes point to polycystic ovarian syndrome (PCOS). Your thyroid function will also likely be evaluated, since thyroid imbalances can quietly interfere with ovulation and implantation.
Ultrasound and the Antral Follicle Count
A transvaginal ultrasound is one of the most informative tools in a fertility evaluation. It allows a specialist to visualize the uterus and ovaries directly, checking for structural issues like fibroids, polyps, or signs of conditions like endometriosis that could affect conception.
During this ultrasound, your doctor will likely perform an antral follicle count (AFC), which measures the small follicles (2 to 9 millimeters) visible on your ovaries. These follicles represent eggs that could potentially mature in upcoming cycles, so the count serves as a snapshot of your ovarian reserve. The ranges break down like this:
- Below 4: Extremely low. Ovaries may not respond well to fertility medications.
- 4 to 9: Low. Stimulation is possible but may require higher doses of hormonal treatment.
- 9 to 21: Normal, and the most common range. Response to treatment varies.
- 22 to 35: Normal to high. Generally responds well to ovarian stimulation.
- Over 35: Very high, and may indicate PCOS.
The AFC combined with your AMH level gives the clearest available picture of your egg supply.
Checking Your Fallopian Tubes
Even if your hormones and ovarian reserve look good, blocked or damaged fallopian tubes can prevent conception. A hysterosalpingogram (HSG) is the standard test to evaluate this. During the procedure, a small amount of dye is injected through the cervix into the uterus. X-ray imaging then tracks the dye as it fills the uterine cavity and, ideally, spills out through the far ends of both fallopian tubes. If the dye doesn’t pass through, it indicates a blockage.
Beyond tubal patency, the HSG also outlines the inner shape of the uterus, revealing abnormalities like scar tissue, polyps, or structural variations that could interfere with implantation. The test is done in a clinic, takes about 15 to 30 minutes, and some women experience mild to moderate cramping during or shortly after.
How Age Affects Your Results
Age is the single strongest predictor of female fertility. At 30, a healthy woman has roughly a 20% chance of conceiving in any given cycle. By 40, that drops to less than 5% per cycle. By 43, even the success rate of IVF falls below 5%, and by 45, using donor eggs becomes the most viable path to pregnancy through assisted reproduction.
This decline isn’t just about egg quantity. Egg quality also decreases with age, which raises the risk of chromosomal abnormalities and miscarriage. This is why the general recommendation is to seek a fertility evaluation after 12 months of trying to conceive if you’re under 35, and after 6 months if you’re 35 or older. If you have known risk factors like irregular periods, a history of pelvic surgery, or endometriosis, earlier testing makes sense regardless of age.
What a Full Workup Costs
Individual fertility tests range from about $50 to $400 each, depending on the test and your location. An AMH blood test typically runs $50 to $200, an FSH test costs $50 to $150, and an antral follicle count via ultrasound runs $200 to $400. An HSG generally falls in the $200 to $500 range. A complete initial workup, combining blood panels, ultrasound, and an HSG, can total anywhere from $500 to over $1,500 out of pocket without insurance coverage.
Some insurance plans cover fertility testing when there’s a documented medical reason, such as a year of unsuccessful attempts at conception. Coverage varies widely by state and plan, so checking with your insurer before scheduling is worth the effort. Many fertility clinics also offer bundled testing packages at a reduced rate compared to ordering each test individually.
Putting the Pieces Together
No single test gives a complete fertility picture. Hormone levels reveal how your reproductive system is functioning right now, the AFC and AMH estimate your remaining egg supply, and the HSG checks for structural barriers. Together, they let a specialist identify whether the issue is ovulatory, anatomical, hormonal, or age-related, and each category points toward different treatment options. For many women, the results are reassuring: the workup finds no clear problem, and the path forward is continued trying with better-timed intercourse or mild interventions. For others, early testing catches treatable issues that would have been harder to address later.