Common Pregnancy Symptoms by Trimester: What’s Normal and What’s Not

Pregnancy is a time of big changes and big questions. As your body adapts to support new life, it’s normal to wonder whether what you’re feeling is expected or something to be concerned about.

Some symptoms are perfectly routine, even if they’re brand new to you. Others may be worth checking with your provider about. The key is knowing what to expect in each trimester and listening to your body along the way!

Below, we’ll walk through the most common pregnancy symptoms by trimester and highlight when it’s time to call your OB-GYN. Whether you’re navigating early nausea or nearing your due date, this guide is here to help you feel informed and supported every step of the way.

First Trimester Symptoms (Weeks 1–12)

Early pregnancy can be a rollercoaster—physically and emotionally. If anything feels off, don’t hesitate to ask questions!

What’s Normal?

  • Fatigue: A surge in progesterone can leave you feeling more tired than usual.
  • Nausea and vomiting: Morning sickness often peaks around weeks 6–10.
  • Breast tenderness: Hormonal changes can make breasts feel swollen or sore.
  • Mood swings: Fluctuating hormones may lead to increased sensitivity or irritability.
  • Frequent urination: A growing uterus and hormonal shifts may send you to the bathroom more often.

When to Call Your OBGYN

pregnant woman near window at home
  • Severe abdominal pain or cramping
  • Heavy vaginal bleeding (more than spotting)
  • Fever over 100.4°F
  • Severe dizziness or fainting
  • Persistent vomiting and dehydration

Second Trimester Symptoms (Weeks 13–27)

The second trimester is often called the honeymoon phase of pregnancy, but it’s still important to monitor for signs that may need medical attention.

What’s Normal?

  • Backaches or round ligament pain: As your belly grows, so does the strain on muscles and ligaments.
  • Increased appetite: Energy returns and hunger often picks up.
  • Mild swelling in feet and hands: Common later in the trimester, especially after standing for long periods.
  • Skin changes: You may notice darkening skin, stretch marks, or a visible line down your belly (linea nigra).
  • Baby kicks! Many people feel movement between weeks 18–22.

When to Call Your OBGYN

  • Sudden, severe swelling (especially in the face or around the eyes)
  • Blurred vision, headaches, or upper abdominal pain
  • Decreased fetal movement after 24 weeks
  • Vaginal bleeding or unusual discharge
  • Persistent, painful cramping

Third Trimester Symptoms (Weeks 28–40+)

As you near delivery, every symptom can feel like the sign. Trust your instincts, if something doesn’t feel right, it’s always okay to call.

What’s Normal?

  • Shortness of breath: A growing uterus can press on your lungs.
  • Braxton Hicks contractions: These “practice” contractions are usually mild and irregular.
  • Frequent urination and disrupted sleep: Common as your baby drops lower into your pelvis.
  • Pelvic pressure or discomfort: Especially as labor approaches.
  • Leaking colostrum (early milk): This is your body prepping for breastfeeding.

When to Call Your OBGYN

  • Regular contractions before 37 weeks
  • Sudden decrease in fetal movement
  • Signs of labor (bloody show, water breaking, frequent contractions)
  • High fever or flu-like symptoms
  • Severe itching, especially on hands and feet (a possible sign of cholestasis)

Trust Your Body and Your Provider

No two pregnancies are exactly alike. Some people feel great, while others have symptoms that change daily. No matter where you are in your journey, one thing is true: You deserve to feel heard, supported, and cared for.

When in Doubt, Reach Out

Have questions about your symptoms? Associates in Womens Health in Omaha, NE is here to help.

Call Associates in Womens Health at (402) 697-7200 with any concerns, and trust yourself every step of the way.

Sources:

https://womenshealth.gov/pregnancy/youre-pregnant-now-what/stages-pregnancy

https://www.uchicagomedicine.org/forefront/womens-health-articles/tips-to-manage-common-pregnancy-symptoms-by-trimester

https://my.clevelandclinic.org/health/articles/pregnancy