trying to spice things up

okay so i don’t want to be like TMI but my fiancé and i used to have a great sex life, but about 6-8 months of our relationship our once great sex life wasn’t so great anymore. we stuck to the same 3 positions and every time i tried talking about he said he didn’t see the problem and that he loved our sex life. then i got pregnant (i’m four months pregnant now) and it’s worse than i ever thought it could get. he only lasts about five minutes and our once three positions have cut down to two. a lot of the time now i feel like it’s me or that he’s not really into it. i’ve gotten so desperate that i’ve resorted to googling way to spice things up and as i was reading i started to get really upset and start crying. it was saying things like just start with simple things like wrapping your legs around him and pulling him closer, but he hates when i do those things even though he used to love them. i don’t really know why i’m saying all of this i guess i just needed a place to vent. i just wish he enjoyed having sex with me. for anyone who read all of this thank you for listening