Probably shouldn't do anything til you ask your doctor.
I am only 22 weeks, and have the same problem, but my Dr had told me no sex, no orgasms, because the orgasm can cause contractions which can cause bleeding and possibly pre-term labor.
I'm experiencing the same thing except I'm only 6 months pregnant this is my 8th child and I've never experienced it before its scary because of the unknown lmk how it goes for you Or What I a.m. to expect
I'd consult your doctor- they will know your case best, but I would avoid any sexual activity until you speak with them.