At 14 weeks pregnant, your baby is about 3½ inches long from head to bottom (crown to rump) and weighs roughly 1½ ounces. That’s about the size of a lemon. You’re just entering the second trimester, and while your baby is still small enough to fit in the palm of your hand, a lot is happening beneath the surface.
Length, Weight, and How to Picture It
The 3½-inch measurement (87 millimeters) is taken from the top of the head to the base of the tailbone, which is how babies are measured in the first half of pregnancy since their legs are curled up. The 1½-ounce weight (45 grams) is comparable to a small handful of grapes or a AA battery. A lemon is the most commonly used size comparison, and it’s a pretty accurate one in both length and roundness.
For context, at 12 weeks your baby was closer to 2½ inches, so there’s been significant growth in just two weeks. The head still makes up a large proportion of the body, but the rest is catching up quickly now.
What’s Developing at 14 Weeks
Your baby’s neck has become more defined this week, which means the head is no longer tucked directly against the chest. This gives the face a more recognizable profile on ultrasound. Red blood cells are now being produced by the spleen, taking over a job that was previously handled by the liver and yolk sac earlier in pregnancy.
The skeleton is actively hardening. The jawbone is developing secondary cartilage structures around weeks 12 to 14, and blood vessels are beginning to grow into the wrist cartilage. The vertebrae started hardening a few weeks earlier, around weeks 10 to 11, and that process continues now. Your baby’s bones are transitioning from soft cartilage to harder tissue, though they’ll remain somewhat flexible well beyond birth.
This is also the week when your baby’s sex may become visible on ultrasound, though it depends on the baby’s position and the quality of the imaging. Many providers wait until the anatomy scan (usually around 18 to 20 weeks) to confirm.
Movement You Can’t Feel Yet
Your baby started moving around week 12, but at 14 weeks, you almost certainly won’t feel it. The baby is still small and its movements are subtle and soft. Most women first notice fetal movement, called quickening, between 16 and 20 weeks. If this is your first pregnancy, it often leans closer to 20 weeks. Second-time parents sometimes recognize the sensation earlier because they know what to look for.
Right now your baby may be stretching, flexing tiny limbs, and even making facial expressions, but all of this is happening well below your threshold of detection.
Where Your Uterus Is Now
At 13 to 14 weeks, the top of your uterus is typically just above your pubic bone. For many women, this is around the time a small bump starts to become visible, though it varies widely depending on your body type and whether you’ve been pregnant before. Your provider may begin measuring your belly from the pubic bone to the top of the uterus (fundal height) at upcoming appointments to track growth.
You might notice that early pregnancy symptoms like nausea are easing up as you enter the second trimester, which is why this stretch is sometimes called the “honeymoon phase” of pregnancy.
Screening Options Around This Time
At 14 weeks, you may be offered or may have already completed prenatal genetic screening. Cell-free DNA screening, which uses a simple blood draw to analyze tiny fragments of your baby’s DNA circulating in your blood, is now recommended as an option for all pregnant patients. It’s the most accurate screening test for the three most common chromosomal conditions: Down syndrome (trisomy 21), trisomy 18, and trisomy 13. It can also reveal your baby’s sex with high accuracy if you want to know.
This is a screening test, not a diagnostic one, so it estimates risk rather than giving a definitive answer. If results come back with an elevated risk, diagnostic testing (like amniocentesis) would be the next step. You can choose to pursue or decline any of these tests based on your preferences.
How Growth Changes From Here
The second trimester is when your baby shifts from building basic structures to refining and growing them. Over the next several weeks, your baby will roughly triple in length. By 20 weeks, measurements will switch from crown-to-rump to crown-to-heel as the legs straighten out, and the numbers will start climbing much faster. Weight gain accelerates even more dramatically in the third trimester, but right now, at 1½ ounces, the focus is on organ maturation, bone development, and building the neural connections that will eventually support movement, sensation, and reflexes outside the womb.