Pregnancy leg cramps are common nighttime calf knots - stretch toes toward shin, prevent with bedtime calf stretches and hydration. A persistently swollen, warm, one-sided calf is clot territory: same-day call.
What to do
Common questions
Why do I get leg cramps during pregnancy?
Leg cramps in pregnancy - sudden hard knots, almost always in the calf, striking at night in the second and third trimesters - affect up to half of pregnant women, and nobody has pinned down one cause. The likely contributors: extra weight and circulation changes loading leg muscles, the uterus pressing on vessels and nerves, and shifts in calcium, magnesium, and fluid balance. The NHS lists them among common pregnancy complaints and confirms they are usually harmless, though maddening at 3 AM. What stops a cramp mid-knot: pull your toes up toward your shin - never point them - and walk it off or massage the muscle. Prevention: calf stretches before bed - standing push against a wall, 30 seconds each side - staying hydrated, keeping active in the day, and sleeping on your left side with pillows arranged so ankles are free. Ask your provider before taking any supplement; magnesium is often discussed but the evidence is mixed, and prenatal care should guide it. The critical distinction to know: a cramp is a hard, painful knot that releases. A calf that stays persistently painful, swollen, warm, or red - especially one-sided - is not a cramp: it is the warning pattern for a blood clot, which pregnancy raises the risk of, and it needs same-day assessment. Sudden breathlessness or chest pain with it is an emergency. Pymander is a free AI doctor, 24/7 by text. Describe the cramps and your trimester, and it can help you manage them.