15 Weeks Pregnant: Growing Stronger Every Day

At 15 weeks pregnant, you’re settling comfortably into the second trimester. Your baby is now about the size of an apple and is growing stronger every day. This is often a wonderful phase of pregnancy—you’re likely feeling more energetic, morning sickness has faded for most women, and you may be starting to feel the first flutters of your baby’s movement. Your bump is becoming more visible, and the reality of pregnancy is settling in beautifully.

Baby Development at 15 Weeks

Your baby is now approximately 4 inches long from crown to rump—about the size of an apple—and weighs about 2.5 ounces. Growth is steady and your baby’s body systems are becoming increasingly sophisticated.

Your baby’s senses are developing rapidly. The eyes, while still fused shut, are becoming sensitive to light. If you shine a flashlight at your belly, your baby may turn away from the brightness. The taste buds are forming, and your baby can taste the amniotic fluid, which carries flavors from the foods you eat.

Your baby’s skeletal system is strengthening. Bones continue to harden (ossify), and the legs are now longer than the arms. Your baby’s joints are all working, and they’re becoming increasingly active—kicking, flexing, and stretching in the amniotic fluid.

The circulatory system is functioning well. Your baby’s heart is pumping about 25 quarts of blood per day—a number that will increase to 300 quarts per day by the end of pregnancy. Hair patterns are being established on the scalp, though the hair itself is still very fine.

Your Body This Week

At 15 weeks, many women are in the “sweet spot” of pregnancy. Energy has returned, nausea has faded, and you’re not yet large enough to be uncomfortable. This is a great time to tackle projects, travel, or simply enjoy feeling good.

Your bump is becoming more noticeable. The top of your uterus (the fundus) is about halfway between your pubic bone and belly button. You may find that people are starting to notice your pregnancy, especially if you’re wearing fitted clothing.

Blood volume continues to increase. By week 15, it’s about 20-25% higher than pre-pregnancy. This increased blood flow gives you that “pregnancy glow” but can also cause nosebleeds, bleeding gums, and visible veins.

You may notice increased vaginal discharge (leukorrhea). This clear or milky white discharge is normal and helps protect the birth canal from infection. However, if discharge is colored, has a strong odor, or is accompanied by itching or burning, contact your provider.

Common Symptoms at 15 Weeks

Improved Energy: The second trimester energy boost is in full swing for many women. Take advantage of this to stay active and prepare for baby.

Growing Bump: Your belly is expanding, and you may experience skin stretching or mild itching. Keeping skin moisturized with cocoa butter or coconut oil can help.

Pregnancy Brain: Forgetfulness, difficulty concentrating, and mental fogginess are common during pregnancy. Hormonal changes, sleep disruption, and the cognitive demands of processing a major life change all contribute.

Stuffy Nose and Nosebleeds: Increased blood volume causes swelling of nasal membranes. Nosebleeds are common and usually not concerning. Use a humidifier and saline spray for relief.

Possible Early Movement: Some women—especially those who’ve been pregnant before—may feel the very first flutters of baby movement around week 15-16. These feel like bubbles, butterflies, or gentle tapping. First-time mothers usually feel movement closer to weeks 18-22.

What to Do This Week

Consider a second-trimester exercise routine. Regular exercise supports healthy weight gain, reduces pregnancy discomfort, improves mood, and prepares your body for labor. See our pregnancy-safe exercises guide for safe activities.

Start researching pediatricians. It’s not too early to begin looking for a pediatrician for your baby. Schedule interviews with potential providers to find one whose philosophy aligns with yours.

Plan your anatomy scan. The mid-pregnancy ultrasound is typically scheduled between weeks 18-22. If you want to learn your baby’s sex, this is the appointment where it’s usually possible.

Begin thinking about nursery setup. While there’s no rush, the second trimester is a great time to start planning your baby’s sleeping space. Consider cribs, bassinets, and safe sleep guidelines.

Stay on top of dental health. Pregnancy hormones can worsen gum disease. Regular dental cleanings and good oral hygiene protect both you and your baby.

Nutrition Spotlight: Vitamin C

Vitamin C plays multiple important roles during pregnancy. It supports your immune system, helps your body absorb iron (critical for preventing anemia), supports collagen production for your baby’s developing skin and connective tissues, and acts as an antioxidant.

The recommended daily intake during pregnancy is 85 mg. Great sources include citrus fruits (oranges, grapefruits, lemons), strawberries, bell peppers, tomatoes, broccoli, kiwi, and mangoes.

Pairing vitamin C-rich foods with iron-rich foods significantly enhances iron absorption. Try a spinach salad with lemon dressing, or eat an orange with your iron supplement. For more on nutrition during pregnancy, visit our pregnancy nutrition guide.

When to Call Your Doctor

Contact your healthcare provider if you experience:

• Vaginal bleeding or spotting
• Severe or persistent abdominal pain
• Fever over 100.4°F
• Severe headaches or visual disturbances
• Sudden or severe swelling
• Vaginal discharge that is green, yellow, or foul-smelling
• Burning or pain with urination

See our when to call your doctor guide for complete information.

Frequently Asked Questions