Lightning crotch is unfortunately not quite as exciting as the name makes out. Instead, the phrase refers to the random, short, sharp shooting pains that some women experience during the third trimester of pregnancy in the vagina or anus area. Ouch.
The pain might feel electric, burning or like pins and needles - but it’s more zappy (…the technical term…) than the dull ache of pelvic girdle pain.
Lightning crotch is caused when the network of nerves in the upper thigh or genital area is compressed by the weight of the baby. These twinges can happen at any time but are very common if you’ve been sitting or lying in the same position for a while. Lightning crotch cannot be prevented (sorry), but usually passes relatively quickly (phew).
The good news is that it’s not dangerous… just annoying.