Chicken pox and pregnant!!!!!

Im freaking out!! My son has been sick for a week and just today I noticed he got a rash around his mouth and inside of it. He has some bumps on his belly so Im pretty sure is chicken pox. I heard if I had chicken pox while kid and also had the vaccination I should be fine. But Im so concern because Im 38 weeks pregnant, the baby has dropped, having a lot of pelvis pressure so this baby might be coming soon, I heard chicken pox last 12-15 days. so maybe this baby is coming while the virus is still going. Anybody has had a newborn that has been exposed to chicken pox!? What I am suppose to do!? 😭