Weeks 20-40

Leg Cramps

Last reviewed by medical team: June 2026

🔵 Common Pregnancy Symptom

Why It Happens

Sudden, painful spasms in the calf muscles, typically occurring at night. They may be related to fatigue, pressure from the uterus on nerves, or calcium/magnesium imbalances.

Safe Home Remedies

Stretch your calf muscles before going to bed.
Stay active with daily walking.
Flex your foot upward (toes to shin) when a cramp strikes.
Ask your doctor about magnesium supplements.

⚠️ When to Contact a Doctor

Contact your doctor immediately if you have localized pain, swelling, or redness in one calf, which could be a sign of a deep vein thrombosis (DVT).

Related Guides & Resources

Typical Week Ranges

This symptom commonly occurs during these weeks of pregnancy:

Week 20 Week 24 Week 28 Week 32 Week 36 Week 40

Related Conditions

Symptom matches for these prenatal conditions:

✦ Gestational Diabetes ✦ Preeclampsia

Clinical Questions & Answers

Q1: Why do leg cramps happen at night?

Fatigue, sluggish circulation, and lying in one position contribute to nighttime spasms.

Q2: What should I do when a leg cramp starts?

Straighten your leg and flex your foot upward, or walk around for a minute.

Q3: Can low potassium cause leg cramps?

Yes, mineral imbalances (calcium, magnesium, potassium) can trigger cramps.