At 11 weeks pregnant, your baby is about the size of a golf ball, measuring just over 1.5 inches long and weighing roughly 1.6 ounces. You’re nearing the end of the first trimester, which means some of the toughest early symptoms may start easing soon, and your first round of prenatal screening tests becomes available this week.
How Your Baby Is Developing
Your baby is busy this week. The fingers and toes are fully separated, and the elbows, knees, and ankles are all working. Your baby is opening and closing their fists and mouth, practicing tiny movements you won’t feel for several more weeks. Bones are beginning to harden from the softer cartilage they started as, and facial features like the nose, lips, and ears are becoming more defined.
The skin is still translucent at this stage, thin enough that blood vessels are visible underneath. Internally, the major organs are all in place and continuing to mature. The tooth buds are forming under the gums, and the reproductive organs are developing, though it’s still too early to distinguish sex on an ultrasound.
What You’re Likely Feeling
Fatigue is one of the most common symptoms at 11 weeks. Your placenta is taking over the job of nourishing the pregnancy from the yolk sac, and the hormonal shift involved in that handoff can leave you feeling exhausted and emotionally uneven. This transition is temporary, and many people notice a significant energy boost once they cross into the second trimester around week 13 or 14.
Nausea may still be present, though for some people it’s already starting to taper. Breast tenderness often continues, and you might notice your bras fitting differently as breast tissue grows in preparation for milk production. Some people experience bloating, constipation, or increased vaginal discharge, all of which are driven by the same hormonal changes.
You probably won’t have a visible bump yet. Your uterus is approaching the size of a grapefruit, but at 11 weeks it still fits inside your pelvis. By around 12 weeks, it begins to rise above the pelvic bone, and that’s when a bump typically starts to show, though the timing varies widely depending on your body type and whether this is a first pregnancy.
Skin Changes
You may have heard about the linea nigra, a dark vertical line that runs down the center of the abdomen. While it can technically appear at any point, it usually becomes visible closer to 20 weeks. The cause is a rise in melanin triggered by hormones from the placenta. The same increase in pigmentation can darken your nipples, freckles, or moles during pregnancy. These changes typically fade after delivery.
Prenatal Screening Opens Up This Week
Week 11 marks the start of a key testing window. Two screening options become available between weeks 11 and 13:
- Nuchal translucency (NT) scan: This is a specialized ultrasound that measures the fluid at the back of your baby’s neck. A larger-than-typical measurement can indicate a higher chance of Down syndrome, Edwards syndrome, Patau syndrome, or congenital heart conditions. It’s a screening, not a diagnosis, so an abnormal result means further testing would be offered.
- NIPT (cell-free DNA screening): A blood draw from your arm that analyzes fragments of your baby’s DNA circulating in your bloodstream. It screens for the same chromosomal conditions as the NT scan and is considered highly accurate, though it’s also a screening rather than a definitive test.
Your provider may offer one or both of these, and they’re optional. Some people want the information to prepare, others prefer not to screen. Either choice is completely reasonable, and your provider can walk you through what each result would and wouldn’t tell you.
Miscarriage Risk at This Stage
If you’ve been anxiously watching the weeks tick by, here’s some reassuring data. Research following over 300 pregnancies found that once a heartbeat is confirmed at 10 weeks, the chance of the pregnancy continuing is 99.4%. While no pregnancy is entirely without risk, that number drops dramatically as you approach the end of the first trimester. Reaching 11 weeks with a confirmed heartbeat puts you in a statistically strong position.
Nutrition in Late First Trimester
During the first trimester, most people need about 1,800 calories per day, which is close to pre-pregnancy intake. You don’t need to “eat for two” yet. The calorie increase comes later: roughly 2,200 per day in the second trimester and 2,400 in the third, or about 300 extra calories above your usual baseline.
Three nutrients matter most right now. Folic acid helps protect against spinal and brain development issues, and you should already be taking it as part of a prenatal vitamin. Iron supports your expanding blood supply and your baby’s developing circulatory system while also preventing anemia. Calcium supports bone and tooth development. If nausea has made eating difficult, focus on keeping your prenatal vitamin down and eating whatever you can tolerate. The baby draws from your existing nutrient stores, so a few weeks of crackers and toast won’t cause harm.
Exercise and Activity
The CDC recommends 150 minutes of moderate-intensity aerobic activity per week throughout pregnancy. That works out to about 30 minutes on most days. Walking, swimming, stationary cycling, and prenatal yoga all count. If you were active before pregnancy, you can generally continue the same activities as long as they feel comfortable and don’t carry a high risk of falls or abdominal impact.
One thing to keep in mind as you move into the second trimester: avoid exercises that require lying flat on your back for extended periods. In later pregnancy this position can compress a major blood vessel, reducing blood flow. At 11 weeks this isn’t a concern yet, but it’s worth adjusting your routine now if you do a lot of floor-based exercises so the switch feels natural in a few weeks.
What’s Coming Next
The next couple of weeks bring meaningful milestones. By week 12, your uterus rises out of the pelvis, making a small bump more likely. The risk of miscarriage drops further. If you’ve been waiting to share the news, many people choose to announce around weeks 12 to 14 once first-trimester screening is complete. Energy levels often improve noticeably in the second trimester, and nausea typically fades for most people by week 14 to 16. You’re close to the point where pregnancy starts to feel less like endurance and more like anticipation.