Sex with ex

Please, no judging!

I’m 4 weeks PP with our 2nd child, my whole pregnancy we only had sex once before we broke up, He’s been around a lot ofc bc we have a newborn... leaving his clothes here and there, asking if i love him (i don’t answer), he even recently started sleeping in bed with me when he usually sleeps in the couch, not doing anything but still in my bed. anyways I’ve been very very horny lately after not having a sex drive for months! We had sex today (which was cleared by my OB since I’m no longer bleeding) and it was amazing! I really miss being with him but i don’t mind being alone it’s been months since we’ve been together.... i hope this doesn’t back fire because idk if he wants anything other than this one time from me and i don’t want to push anything... it just happened and we didn’t talk about it afterwards just continued like nothing happened. Was this a bad idea????