I'm high risk, 31 weeks pregnant.had light bleeding week ago for a few hours. since ive been having sharp pains in my cervix as if opening&closing ?

Call/see your OB: no online help, you need to be examined, meanwhile, rest, no intercourse, and go to your OB or ER if OB can't be reached, good luck

High risk pregnancy: If you have been determined to be high risk and you at 31 weeks with these symptoms - call your OB or go to a hospital and get evaluated. This is not something to be taken lightly