I think we have a problem🤦🏾‍♀️

Okay soo me and my “friend” we have been friends for some months now and we always have sex unprotected crazy as it sounds and for three days in a row we’ve been constantly going at it and he has constantly came in me🤦🏾‍♀️. But before the third one happening I told him the night before to not do it again.But of course he said he didnt hear me 👎🏽.But now every since then my stomach has been having these lil cramps and sometimes it even feels weird in there.So what should I do? Mind you guys he already has two other kids and I dont think he needs another one just yet.