Lightning crotch is a term used to describe a sharp, sudden pain in the vagina or pelvic region during pregnancy. It is not a sign of labor, and typically isnt an indicator of anything serious. Lightning crotch can feel different from person to person, but most often it manifests as a sharp, shooting pain in the vagina or pelvic area that lasts only for a moment. It may also feel like stinging or a pins-and-needles sensation in the same region. Lightning crotch can occur at any time during pregnancy, but it's most common in the third trimester when the baby is bigger and putting more pressure on the nerves. Unfortunately, there is not much that can be done when lightning crotch hits, other than changing positions to get the baby off the nerves or wearing a belly support garment or belt to help lighten the load on the pelvis. Lightning crotch is not dangerous, nor is it a sign that there is a problem.