Sex is so akward

my husband and I have avoided sex in the early days of pregnancy out of fear. We lost our son last year and we were avoiding tbh. Now we are both really wanting to. So we gave in, foreplay was brief because we wanted to just get down to it, wasn't long before we just gave up. Positions I liked before were impossible due to my size and the only one that worked was doggy (which actually really hurt) but it burned a little bit too. Husband said that I did taste very acidic down there (I know TMI) which would explain why it was burning a bit during it. I don't have a yeast infection or any other infection. Has anyone else had anything like this?