Accidental Period Sex 😰

So far I've only come over to his house, we hang out, have sex, I spend the night (he likes to cuddle), then head home in the morning. However, this last time that we had sex, in the middle of doggy style, he kept pausing which I thought was weird so I sit up and look behind me to see that my period has started. And this is no normal period. It's the kind of period that starts off a little brownish before becoming red(my birth control has messed with my period a bit), so there's brown spots all over the condom and he's just staring at it, confused. I say "Oh my god, I think that's my period" and he immediately pulls out and backs up. He's trying to be cool about it, but as I'm running to the bathroom I can hear him trying not to gag. I'm in the bathroom cleaning up and trying not to freak out (the hormones are kicking in). Eventually I come out of the bathroom and go back to his room, ready to grab my stuff and leave but he's sitting on the bed watching TV not saying anything. He goes to the bathroom and I put on my sweater to leave but when he comes back, he sees my sweater and asks if I'm cold and shuts the window. By this time, I'm thoroughly confused so I just take my sweater off and sit down. It's dead quiet besides the TV and I'm still confused as to why he's pretending like what just happened didn't happen. Finally, I apologize and he says it's fine. So we eat the pizza we ordered beforehand and go to sleep but instead of cuddling me as usual, he rolls over and sleeps with his back facing me the whole night, not touching (we usually cuddle all night or are touching in some way). We get up the next morning and I'm still a little shaken up about the experience (it's never happened to me before) but he's still acting like it didn't happen. He hugs me (we usually kiss) and I leave.

After two days of no response, I finally text him apologizing again and he assures me that it's OK but it doesn't feel like it's OK. He's a slightly older guy (I'm 23, he's 28) and he's previously married so I'm hoping that he'll be mature about the situation and not let it get in the way of any feelings we may have for each other or the FWB relationship that we have but he's also a guy and he's never experienced period sex either so he may be too grossed out to want to see me again (which is stupid if he is).

So what do I do? Do I let it go and keep talking to him? Stop talking to him to see if he reaches out to me? Just cut him off completely? HELP!!!