Skip to Content

Highlights of this Week >>
Pregnancy Symptoms >>
Weekly Checklist >>
Your Pregnant Belly >>
Baby Development >>

The 15th week of pregnancy marks the beginning of the second trimester, which is often a more comfortable time for expectant mothers. Many of the unpleasant symptoms of the first trimester, such as morning sickness and fatigue, tend to improve during this time. There’s a lot to know about this week in pregnancy, so let’s jump right in.

Your Baby is the Size of a Baseball


4.3 inches

Head to Toe


2 – 4 ounces

Highlights of the Week

  • Baby’s external genitals are forming and may be visible through ultrasound.
  • Baby’s limbs are growing longer, and tiny nails are beginning to develop.
  • The baby’s skin is becoming more opaque as fat stores begin to accumulate.
  • The placenta is fully functioning and providing vital nutrients to the baby.
  • Pregnancy symptoms like morning sickness may start to subside for some women.
  • Increased energy and improved mood may be experienced during this time.
  • The uterus is growing, and some women may start to show a small baby bump.
  • The baby can make small movements, although they are not yet felt by the mother.
  • Maternal weight gain may become more noticeable.
  • Some women may begin to experience pregnancy cravings or changes in appetite.

Pregnancy Symptoms in Week 15

Abdominal growth: As your baby grows, your uterus will expand, causing your abdomen to appear larger and rounder.

Breast changes: Your breasts may continue to grow and feel heavier as they prepare to produce milk. You may also notice that your nipples and areolas are darker and larger.

Light spotting or vaginal discharge: It’s common to experience some light spotting or vaginal discharge during pregnancy. This is usually nothing to be concerned about, but it’s always a good idea to contact your healthcare provider if you have any concerns.

Fatigue: While many women experience an increase in energy during the second trimester, it’s still common to feel tired during pregnancy. Make sure to get plenty of rest and try to pace yourself.

Mood changes: Pregnancy can cause a wide range of emotions, from happiness and excitement to anxiety and stress. It’s normal to feel a range of emotions during pregnancy, but if you’re feeling overwhelmed or anxious, it’s important to seek support from friends, family, or a mental health professional.

Constipation: The increased levels of progesterone in your body can slow down your digestion, causing constipation. To help relieve constipation, make sure to drink plenty of water and eat high-fiber foods.

Heartburn and indigestion: As your uterus expands, it can put pressure on your stomach, causing heartburn and indigestion. To help relieve these symptoms, try eating smaller, more frequent meals and avoid spicy or greasy foods.

Pregnancy glow: Some women experience a “pregnancy glow” during the second trimester, characterized by radiant, glowing skin. This is due to an increase in blood flow and the production of pregnancy hormones.

The 15th week of pregnancy is an exciting time as you enter the second trimester and your baby continues to grow and develop. By taking care of yourself and keeping in close contact with your healthcare provider, you can ensure a healthy pregnancy for you and your baby.

15 Week Pregnancy Checklist

Attend your second prenatal appointment: This is a good time to ask any questions you have about your pregnancy and the upcoming months. Your healthcare provider will check your blood pressure, weight, and baby’s heartbeat.

Take your prenatal vitamins: Make sure to continue taking your prenatal vitamins as prescribed by your healthcare provider. These vitamins are important for your baby’s development and your own health during pregnancy.

Eat a healthy diet: It’s important to eat a well-balanced diet during pregnancy to ensure that you and your baby get the nutrients you need. Make sure to include plenty of fruits, vegetables, whole grains, and protein in your diet.

Stay hydrated: Drinking plenty of water is important for your own health and the health of your growing baby. Aim to drink at least eight glasses of water per day.

Get plenty of rest: Pregnancy can be physically and emotionally draining, so it’s important to make sure you’re getting enough rest. Try to get at least seven to eight hours of sleep per night.

Exercise: Gentle exercise, such as walking or swimming, can help to boost your mood and energy levels. Talk to your healthcare provider before starting any new exercise routine.

Practice self-care: Pregnancy can be a challenging time, so it’s important to take care of yourself. Take breaks when you need them, ask for help when you need it, and do things that make you feel good, such as taking a warm bath or going for a walk.

Prepare for childbirth: Consider taking a childbirth education class to learn about the different stages of labor, pain management techniques, and what to expect during delivery.

Talk to your employer: If you’re planning to take maternity leave after your baby is born, now is a good time to start discussing your plans with your employer.

Your 15 Week Pregnant Belly

During the 15th week of pregnancy, your uterus will continue to grow and expand as your baby develops. As a result, you may notice that your abdomen is starting to appear larger and rounder. Every pregnancy is different, so the size and appearance of your belly at this stage will depend on a number of factors, including your pre-pregnancy weight and the size of your baby.

During the second trimester, your uterus will start to rise out of your pelvis and move up into your abdominal cavity. This can cause your belly to appear more prominent and may also cause some discomfort as your uterus expands. You may also notice that your belly feels harder or firmer as your uterus grows.

It’s important to remember that every pregnancy is different and the size and shape of your belly will depend on your own unique circumstances. If you have any concerns about the size or appearance of your belly, it’s always a good idea to discuss them with your healthcare provider.

Baby Development at 15 Weeks

At 15 weeks, your baby is about the size of a baseball, measuring about 4 inches from head to bottom and weighing about 2.5 ounces. Their ears, eyes, and nose are more defined, and they can even hear sounds from the outside world. The bones in their arms and legs are also starting to harden.

During this week, your baby’s organs and systems are continuing to develop and function. For example, their liver is producing bile, their kidneys are producing urine, and their heart is pumping blood throughout their body. Your baby’s skin is also starting to thin and smooth out as they continue to grow.

Your baby’s brain is also developing rapidly at this stage. Their brain is growing in size and complexity, and they are starting to develop the ability to process information and make connections. Your baby’s senses are also starting to develop, and they may be able to hear sounds from the outside world.

It’s amazing to think about all of the amazing developments that are happening inside your body during pregnancy. If you have any questions about your baby’s development, it’s always a good idea to discuss them with your healthcare provider.

How Many Months is 15 Weeks Pregnant?

Fifteen weeks of pregnancy is equivalent to approximately 3.5 months. Pregnancy is typically divided into three trimesters, with each trimester lasting about three months. At 15 weeks, a woman is in the second trimester of pregnancy, which spans from week 13 to week 28.