Im due a baby in just under 4 weeks and my husband woke me in the night to tell me he has cheated. Need to talk to someone.

Don't know if this is right place to add this. I'm a real person, this is real life and never dreamed this would happen to me. My husband wakes me in the night as he couldn't sleep to tell me he slept with 3 women in 1 night at a sex/swingers bar whilst working away. It was basicly a foursome. He's only telling me before the baby is born as he's terrified he's given me and the baby an sti. He was waiting to tell me after the baby 'apparently' so I wouldn't get stressed. Now we both need to be checked out. Can't tell any family or friends (my choice) because I'm to proud. Literally going through all this in my head plus were living with my parents while our new place is made livable. He cheated 6 days after our offer on our forever home was accepted. Fuck my actual life, thought doing up the house with a child and new born was my limit now this. Opinions and advice welcome. Although note i have disided to stay together right now, I don't know maybe my mind will change but right now it's all to much to leave. He said he would leave though and leave me everything if I wanted it but I didn't go into buying a reno with 2 kids alone and thought it was our future.