Hi, I think you'd have to ask your dr. about that, maybe he's putting a restriction on you for some reason. This is my 3rd pg and I've never had a problem with oral nor been told not to have it. The one thing that is important during oral sex is to make sure that your SO does not blow into your vagina, it can cuase an air bubble to go inside and block your blood vessel, something like that. So as long as he doesnt do that, it's ok.