Pregnancy Warning Signs That Need a Doctor Right Away, by Trimester

Vaginal bleeding, severe abdominal pain, headache with swelling or blurred vision and reduced fetal movement should never wait. A trimester-by-trimester summary.

1. First trimester (weeks 1-13)

Vaginal bleeding with lower or one-sided abdominal pain, which may signal threatened miscarriage or ectopic pregnancy.
Persistent vomiting with inability to keep fluids down, weight loss, dizziness or fainting.
High fever above 38.5°C.

2. Second trimester (weeks 14-27)

Severe headache, blurred vision or unusual swelling of the face or hands, possible signs of preeclampsia.
Bleeding or unusual fluid, regular cramping.
Burning urination with fever or flank pain.

3. Third trimester (weeks 28-40)

Clearly reduced fetal movement, or no kicks for many hours.
Regular contractions before week 37.
Bleeding, ruptured membranes, continuous abdominal pain.
Upper abdominal or right rib pain with a headache.

4. What to do

Stop activity, note the time and describe your symptoms, then call your doctor or go to the nearest facility. Do not self-medicate for pain or wait overnight. This information is a general guide and does not replace an in-person exam.