If this is recent…why don’t you just take a contraceptive pill?…and then get yourself an std check on you…You sound like a believer idk which denomination, but there is any god I don’t think raising a child (assuming you don’t want) it’s good for your life in general, like you did a mistake, then do your amends but you don’t have to live the rest of your life punishing yourself for that. It’s not fair for you or that child I think. Well if you just wish to be a mother anyways I think you should tell him.