At 11 weeks pregnant, your baby is about the size of a lime, measuring roughly 44 to 54 millimeters from head to rump depending on the exact day of the week. Your body may or may not show visible changes yet, but beneath the surface, both you and the fetus are in the middle of rapid transformation. Here’s what’s happening on both sides.
What the Baby Looks Like at 11 Weeks
The face is starting to look distinctly human, though the proportions are still unusual. The eyes sit wide apart on a broad face, the eyelids are fused shut (they won’t open for months), and the ears are positioned low on the sides of the head. Tiny tooth buds are forming inside the gums, and the nasal passages are taking shape. The head still makes up a large portion of the body, but the rest is catching up quickly.
Fingers and toes have separated and are no longer webbed. Nail beds are beginning to develop. The limbs are lengthening, and the baby can now make small, spontaneous movements, though you won’t feel them for several more weeks. Bone is starting to harden in places that were previously soft cartilage.
Internally, the intestines are growing so fast that they temporarily push out into the base of the umbilical cord. This is completely normal. Over the next couple of weeks, they’ll migrate back into the abdominal cavity as the body grows large enough to contain them. The heart is fully formed with four chambers and beating at 120 to 160 beats per minute, roughly twice the rate of an adult heart. The liver, kidneys, and brain are all developing rapidly.
What Your Body Looks Like
Most people at 11 weeks don’t have an obvious baby bump yet, but you might notice your waistband getting tighter or a slight fullness in your lower abdomen. Your uterus is about the size of a grapefruit at this point and is still tucked behind your pubic bone, which is why a visible bump hasn’t appeared for most people.
Whether you show early depends on several factors. If this isn’t your first pregnancy, your abdominal muscles may have stretched during a previous pregnancy and not fully returned to their original position, which can make a bump appear sooner. Body type plays a role too. People with a smaller frame tend to show closer to 12 weeks, while those carrying more weight around the midsection might not show until closer to 16 weeks. The position of your uterus also matters: a uterus that tilts toward the front can make you show earlier, while one that tilts toward the back may delay a visible bump by weeks.
Some people notice what looks like a bump earlier than expected due to a condition called diastasis recti, where the muscles running down the center of the abdomen separate slightly and create a bulge. This isn’t a baby bump in the traditional sense, but it can look like one.
Common Physical Changes You Might Notice
Even without a bump, your body is giving plenty of signals. Breast tenderness and swelling are common by now, and you may have gone up a cup size already. Bloating can make your abdomen look larger than the uterus alone would explain, especially by the end of the day. Some people notice their skin changing: darker patches on the face, a faint line forming below the belly button, or new breakouts from hormonal shifts.
Nausea, if you’ve been dealing with it, often starts to ease around this time, though it can linger for a few more weeks. Fatigue is still a major feature of the first trimester. You might also notice increased vaginal discharge, which is normal and caused by higher blood flow to the pelvic area.
What You’ll See on an Ultrasound
If you have an ultrasound around 11 weeks, you’ll see something that looks recognizably like a baby for the first time. The head, body, and limbs are all visible, and you can usually watch the heartbeat flickering on screen. The baby may appear to move or wiggle, though it’s still too small for you to feel anything.
This is also the earliest point in the window for a nuchal translucency screening, which is typically done between weeks 11 and 14. During this scan, the technician measures a small pocket of fluid at the back of the baby’s neck. The thickness of this fluid layer helps estimate the risk of Down syndrome and certain other genetic conditions. It’s a screening test, not a diagnostic one, meaning it identifies higher or lower risk rather than giving a definitive answer. If the measurement falls outside the normal range, additional testing is usually offered.
How Big the Baby Grows This Week
Growth during week 11 is surprisingly fast. At the start of the week (11 weeks, 0 days), the average crown-to-rump length is about 44 millimeters. By the end of the week (11 weeks, 6 days), it reaches nearly 54 millimeters. That’s roughly a centimeter of growth in just seven days. The baby weighs approximately 7 to 8 grams, about the weight of two grapes. Over the next few weeks, growth will accelerate even further as the fetus transitions from the embryonic stage into a period of rapid weight gain and organ maturation.