I agree with nik2153. I had the same probly with all three of my pgs. As long as ur dr says sex is safe 4 u then continue. Water is almost always the answer when ur pg.
I HaD ThatHappen With MyFirst Baby. I'mPregnantWithNumber 2 Now. My MidWife Said ItWas Normal AndToNotGetConcerned Unless ThEY Continued AfterA Half Hour Or So And Got Stronger. Remember SexCanHelpYouGo IntoLabor WhenYouR Body Is Ready.
Having orgasms can cause your uterus to contract. I'm 32+ 6 and I just make sure I drink plenty of water after intercourse and lay on my left side. My contractions slow down or go away within an hour or so of doing that.