Im honestly so sad and I don’t know what to do.

About a month ago i went over my husbands(we’ve been married for 2 months barely) phone. And i found him messages with girls from tinder trying to meet them , multiple messages he sends them. As well as girls on facebook, on whatsapp. Omg everywhere. Im 6 months pregnant, he didnt want to have sex with me anymore thats how i firgurrd maybe he was cheating on me. And i guess he was. He says he didnt have sex with them supposly so thats not cheating. He also tried to get back at me for seeing my ex way back before I was pregnant or married with him we weren’t even an official couple. He has never posted me on his social media and nobody knows were married except our close family. And i dont know what to do because its not just about me anymore but the baby, but hes still constantly talking to girls!! NEXT TO ME IN BED! TRYING TO MEET THEM UP IN MY CAR!