I NEED ADVICE!!!!

I'm 6wks pregnant and staying to really show (5th pregnancy). I told my s/o that I was pregnant on new years eve. we have always had sex like rabbits, all the time. he was always turned on. ever since I told him I was pregnant its like his d*#+ is broken!! he will be rock hard then all of a sudden it will only be semi hard. all I want to do is have sex and I can't BC he can't stay hard! of course I'm emotional and I cried the other night and I said "its BC I'm starting to look like a seal isn't it?" he said no but I don't know what to do. I even bought a sexy nighty.... nothing. wtf can I do??!!!!

PS: sorry if this is tmi