33 weeks vagina hole feels stretched again had sex twice since i stopped do to contractions cause of sex could i be dilating at all?! honest answers!!

Yes: The prostaglandins in semen cause contractions and can cause labor. Prostaglandins are used to induce labor. Anyone at risk for premature labor or premature delivery should avoid sex. Also avoid breast stimulation since that can cause contractions. Good luck

Call OB now 4 exam: You should have a vaginal exam performed by your obstetrician. Given your younger age, you are at increased risk for preterm labor. Let your OB assess you today, ask about whether or not you need pelvic rest (no sex) for the rest of pregnancy or not. There are medicines that can stop preterm labor. You are a bit too early in this pregnancy to deliver. Giving baby a few wks 2 grow is best 4 both.