I have a really embarrassing question guys.

So like, I'm 18 and I lost my virginity at 16 so I should totally know the answer to this question. I've always been with the same guy (for a little over two years now and I love him so so so much) but, he has never cummed inside me. I'm on birth control and have been for a while now. Is it a bad idea for him to do that? I really want him to but I'm scared of getting pregnant. ☹️