At 14 weeks, you’ve officially entered the second trimester, and for many women this is when pregnancy starts to feel real in a new way. Your baby is about 3.5 inches long from head to rump and weighs roughly 1.5 ounces, about the size of a lemon. The nausea and exhaustion of the first trimester are typically fading, and a small but noticeable bump may be starting to show.
How Your Baby Is Developing
Your baby’s body is becoming more proportional this week. The head, which dominated the first trimester, is now catching up with the rest of the body. Tiny facial muscles are active enough that your baby can squint, frown, and grimace. Ultrasound technicians at Akron Children’s Hospital report seeing a full range of facial expressions as early as 14 weeks, from what looks like smiling to sticking out the tongue.
The kidneys are beginning to produce urine, which will gradually become the primary source of amniotic fluid over the coming weeks. By around 18 weeks, nearly all amniotic fluid comes from the baby’s kidneys. The roof of the mouth is fully formed, and the intestines are producing a thick, dark substance called meconium that will become your baby’s first bowel movement after birth.
In the next couple of weeks, a fine layer of hair called lanugo will begin covering your baby’s skin. This hair serves a purpose: it helps a waxy coating called vernix stick to the skin, which protects delicate fetal skin from the constant exposure to amniotic fluid. Both lanugo and vernix are shed before or shortly after birth.
What Your Body Feels Like
The most welcome change at 14 weeks is that first-trimester symptoms are easing for most women. Morning sickness is winding down, and the bone-deep fatigue that defined weeks 6 through 12 is lifting. You may notice a surge in energy that feels almost dramatic compared to the last two months. This is the stretch many women describe as the “honeymoon” phase of pregnancy.
That said, new symptoms are arriving. You might feel sharp, sudden pains on one or both sides of your lower belly, especially when you stand up quickly, roll over in bed, sneeze, or laugh. This is round ligament pain. Two ligaments run from the front of your uterus down into your groin, and as your uterus grows, these ligaments stretch and thicken. A quick movement can make them contract faster than they’re prepared for, producing a stabbing sensation that’s startling but harmless. It typically lasts only a few seconds.
Your uterus is rising out of the pelvis. At 12 weeks it sat roughly at the level of your pubic bone; by 20 weeks it will reach your belly button. Right now it’s somewhere in between, which is why you may notice your waistband getting tighter even if other people can’t see a bump yet. Some women, especially those in a second or later pregnancy, are visibly showing by now.
Skin and Pigmentation Changes
Hormones from the placenta are increasing the production of melanin, the pigment that gives skin its color. This can cause several visible changes around this stage. A faint vertical line running from your belly button to your pubic bone, called the linea nigra, may start to darken. Your areolas might look noticeably darker. Some women develop brownish patches on the cheeks, forehead, or upper lip, sometimes called the “mask of pregnancy.” All of these changes are driven by the same hormonal mechanism and typically fade after delivery.
If you’re spending time outdoors, sun exposure can intensify these pigmentation shifts. A broad-spectrum sunscreen and a hat can help keep them from becoming more pronounced.
Nutrition in the Second Trimester
Your calorie needs are increasing, but not by as much as you might think. During the first trimester, your body didn’t need many extra calories at all. Now, in the second trimester, the recommendation rises to about 2,200 calories per day for most normal-weight women, roughly 300 to 400 more than you needed before pregnancy.
What matters more than the calorie count is where those extra calories come from. Iron demands are climbing because your blood volume is expanding significantly. Calcium is being pulled into your baby’s developing bones. Fiber is worth paying attention to because constipation tends to worsen as pregnancy progresses. Practical additions like an extra serving of leafy greens, a handful of nuts, or a piece of fruit with yogurt cover a lot of these bases without requiring dramatic changes to how you eat.
Upcoming Screening Tests
If you haven’t already had first-trimester screening, your provider may bring up a blood test that’s typically done between weeks 15 and 22, with the most accurate results coming between weeks 16 and 18. This test measures four substances in your blood to estimate the likelihood of certain chromosomal conditions and neural tube differences. It’s a screening test, not a diagnostic one, which means an abnormal result doesn’t confirm a problem. It flags pregnancies that might benefit from further testing, such as an ultrasound or amniocentesis.
Some providers use newer cell-free DNA screening instead, which can be done earlier and has a higher detection rate. Your provider will discuss which option makes sense based on your age, history, and preferences.
Sleep and Comfort
At 14 weeks, you can still sleep in whatever position feels comfortable. The concern about back sleeping compressing major blood vessels applies later in pregnancy. A study funded by the National Institutes of Health found that sleep position through 30 weeks did not affect the risk of pregnancy complications. The researchers noted that their findings did not extend to late pregnancy, when the weight of the uterus is significantly greater.
That said, many women find that getting comfortable on their side now, before the belly gets large, makes the transition easier later. A pillow between your knees or under your belly can relieve pressure on your lower back. If you wake up on your back, there’s no reason to worry at this stage. Simply roll to your side and go back to sleep.
What You Might Notice This Week
A few other changes are common around week 14, though not every woman experiences all of them:
- Increased appetite. As nausea fades, hunger often surges. This is normal and reflects your body’s increasing energy demands.
- Nasal congestion. Higher blood volume causes the membranes inside your nose to swell. You might feel stuffy without being sick.
- Thicker hair. The same hormonal shifts that affect your skin also slow the normal rate of hair shedding, so your hair may feel fuller.
- Visible veins. Your blood volume is increasing by up to 50 percent over the course of pregnancy. You may notice blue veins becoming more prominent on your chest, belly, or legs.
Week 14 is often when pregnancy shifts from something you’re enduring to something you’re starting to enjoy. Energy returns, appetite normalizes, and the growing bump makes the whole experience feel more tangible. The anatomy scan, where you’ll get a detailed look at your baby’s development, is typically just a few weeks away at around week 18 to 20.