Girls, good day everyone... I have a little intimate problem, during sex…

Girls, good day everyone... I have a little intimate problem, during sex with my husband, I feel like I'm about to describe myself... and it's all the time while he's inside, as soon as he comes out - I don't want to be small. And so throughout the whole pregnancy. Can you tell me, maybe someone has this way too or had it? This question is kind of embarrassing to ask my doctor gynecologist... Maybe there are those who have already encountered such things? Sorry in advance for the overly intimate question.