Help😔

So i been dating this guy for 6 months now and it's been so good ..so good to the point we've been having careless sex which resulting in me getting pregnant just found out pretty early I'm only 20 I'm able to take care of the baby and so is he but I don't think I'm ready for my body to go through that and I want everything to be right and he told me if I Could an abortion we would break up but I don't want a baby because another reason relationships never stays the same after a pregnancy I don't wanna lose him or myself idk what to do