Husband cheated

So I just found out that my husband cheated on me last June while I was pregnant. They met on Tinder and immediately she discussed looking for a hook up to send video to her husband, then asked for a pic of my husbands penis, then they arranged to meet up and hooked up, during explanation of the hook up “rules” the woman mentioned that she preferred if he finished inside of her to which he agreed, he swears he used a condom but I don’t believe him at all. I can’t believe he would jeopardize not only my health but also the health of our unborn child at the time smh. He was on WhatsApp speaking to multiple women sending pics of our dog, our child’s room, just weird. He was also frequenting only fans which atp if that had been all I’d found I’d be feeling way better than I do right now. It really sucks bc we just got married in November and we have a 9 month old son, I’ve saved all the evidence for if I decide to proceed with divorce which in this moment is looking very likely, he wants to go to marriage counseling but rn it makes me sick to even think of us breathing the same air rn. I am SICK to death about this and it took EVERYTHING in me not to punch every single one of his teeth out his mouth😭😭😭, I have no idea what to do, if I didn’t have my son i’d be filing today, but idk 😭

Update‼️

So yesterday I sent my husband this text message

I know that after all he’s done I’ll never fully trust him again and I also want my child to know that if someone is mistreating you, you don’t need to stay to save face, I’m scheduling an appt with a divorce attorney, I’m done.