TMI but I need advice ladies...so my son turned 3 months today since he was born my SO and I haven't…

TMI but I need advice ladies...so my son turned 3 months today since he was born my SO and I haven't had unprotected sex cause I'm scared to get pregnant again or should i say too soon but what are the percentage that if we don't use a condom I'll end up pregnant?? I really hate the feeling of the condom so uncomfortable lol