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Written by

Gina Conley, MS

15 Weeks Pregnant: Symptoms, Baby Size & What to Expect

  • Motherhood, Pregnancy

Table of Contents

Welcome to Week 15 of your pregnancy journey! At 15 weeks pregnant, we are moving deeper into the second trimester, often called the “honeymoon phase” of pregnancy. Many moms-to-be experience increased energy, fewer symptoms, and a renewed sense of well-being. Here, we’ll cover what to expect for both you and your baby during this week, along with some personal insights from my own experience as I navigate my fourth pregnancy.

Explore Our Prenatal Fitness Programs

What's Happening with Your Baby

At 15 weeks, your baby is approximately the size of an avocado, measuring approximately 6.4 inches long. Here’s a glimpse into your baby’s development:

  1. Developing Ears: Baby can now start to hear sounds from the outside world, including your voice! It’s a great time to start talking, reading, or singing to your baby.

  2. Joints Are Forming: Your baby’s joints are getting stronger, and they may start moving more. You might not feel those movements just yet, but they’re happening!

  3. Breathing & Swallowing: Baby is practicing essential skills like breathing amniotic fluid and strengthening the sucking reflex for future feeding.

  4. Genetic Screenings: Around this time, some providers offer genetic screening options like the quad screen and amniocentesis. These tests can help identify potential genetic disorders and neural tube defects. If you have questions about these screenings, talk to your healthcare provider to decide what’s best for you.

Changes You Might Experience at 15 Weeks Pregnant

As your baby grows, your body continues to adjust. Here are some common experiences during Week 15:

  1. Increased Libido: Many women experience a boost in sex drive due to hormonal changes. As long as there are no complications, it’s safe to enjoy intimacy.

  2. Appetite, Heartburn, & Indigestion: With morning sickness fading, you may feel hungrier. Focus on nutrient-dense foods to support both you and your growing baby. Unfortunately for some, heartburn and indigestion begin to make an appearance. This is due to progesterone, which relaxes the muscles in your esophagus, leading to more frequent heartburn. Eating smaller meals and avoiding spicy foods may help.

  3. Swollen, Bleeding Gums: Hormonal changes can make your gums more sensitive. Keep up with dental hygiene and consider an extra cleaning at the dentist.

  4. Nose Bleeds & Congestion: The increased blood volume can lead to stuffiness and occasional nosebleeds. Staying hydrated and using a humidifier can help alleviate these symptoms.

Programs that can help
On-demand video · 128 workouts Prenatal Workout On-Demand Follow-along workouts from week 5 to week 41, four or five a week with guided warm-ups and cool-downs — over 128 sessions coached in real time alongside the video. Learn more App program · 40 weeks Prenatal Strength Training A gym-based program that syncs to your current week of pregnancy — four strength sessions plus one pelvic stability workout a week, with demo videos for every exercise. Learn more Bundle · lifetime access MamasteFit Bundles Combine courses and programs for lifetime access and save up to 15% — grouped for birth preparation, the third trimester, or the whole pre and postnatal journey. Learn more

Nutrition and Safe Foods During Pregnancy

Wondering what’s safe to eat? Some great resources include:

Some common questions moms have:

  • Can I eat oysters and clams? Cooked oysters and clams are safe, but avoid raw ones.

  • What about deli meat? Heating deli meat until steaming reduces the risk of listeria, making it safer to eat.

Read our Blog about essential nutrients during pregnancy for a better understanding of the vitamins and nutrients you should be looking for in your prenatal vitamin and prenatal diet.

My Personal Experience in Week 15

Navigating the 15th week of pregnancy while already being a mother to three has been a unique journey filled with its own set of challenges and joys. Here are some more personal insights:

This week has been pretty uneventful (which is a good thing!). I’ve had more energy, which has allowed me to stay consistent with workouts. I even completed the cardio portion—something I typically skip! My goal for next week is to complete all four strength workouts, possibly with conditioning and an optional pelvic stability session.

One new symptom I’ve experienced is pregnancy acne, which I’m managing with natural skincare products. I’ve also been practicing lymphatic drainage massage to help with congestion and maintain healthy circulation.

I continue using Primally Pure’s belly balm, and so far, no stretch marks! (Though genetics definitely play a role.) If you’re looking for great pregnancy skincare, check them out with code MAMASTEFIT for a discount!

Conclusion

Every pregnancy is unique, and Week 15 can bring its own set of experiences and challenges. I’m hoping to maintain my energy and stick to my fitness routine next week. Pregnancy is a journey with ups and downs, but staying active and taking care of myself makes a big difference. It’s essential to listen to your body, take care of your mental and physical health, and prepare for the exciting changes ahead.

If you’re looking for more support during your pregnancy, consider exploring our online prenatal fitness programs and childbirth education courses. You can bundle these for additional savings!

Programs that can help
On-demand video · 30 workouts Core, Pelvic Floor & Pelvic Stability Thirty follow-along workouts across beginner, novice, and advanced levels, ten per level — core and pelvic floor strength for pain relief in pregnancy or postpartum. Learn more Video course · 9+ hours Childbirth Education Over nine hours of video on contractions, comfort measures, pushing, and recovery — so you walk into labor knowing what's happening and what your options are at each stage. Learn more On-demand video · 24 workouts Birth Prep Workout Program Twenty-four workouts that open the pelvis for each stage of labor — strength, mobility, and positioning you can start at any fitness level, 15 to 30 minutes each. Learn more

Frequently Asked Questions

How should I feel at 15 weeks pregnant?
Week 15 sits in what's often called the "honeymoon phase" of pregnancy — many moms-to-be notice increased energy, fewer symptoms, and a renewed sense of well-being as morning sickness fades. That said, your body is still adjusting: some women experience a boosted libido, a bigger appetite with heartburn or indigestion, sensitive gums, or stuffiness and occasional nosebleeds from the increased blood volume. Every pregnancy is unique, so check in with your provider about anything that doesn't feel right to you.
Where is the baby located at 15 weeks?
At 15 weeks, baby is tucked inside your growing uterus, low in your belly — and it's grown enough that you may start to feel it through your abdomen. By 16 weeks pregnant, Gina's midwife measured her belly at 14 cm, and her kids could even feel where her uterus was growing. Your provider or midwife tracks this growth (called fundal height) at your prenatal appointments.