First time Advice

Me and my boyfriend have been together for about 2 months and we’ve talked about having sex and at first I was worried because what if it doesn’t fit or it hurts too much or it’s just awkward and not enjoyable. Now I feel a bit more comfortable and that’s not the problem for me anymore but it’s the fact that he doesn’t have protection and I don’t have plan B. So if I had sex the time after ovulation and before my period starts, would I get pregnant if we didn’t use protection?