I don’t get it

So the other night I caught my baby daddy in the car with another girl and instead of his friend pulling over my baby daddy covered his face so mad at his actions I decided to spend a couple nights with my friend at her house because I’m 38 weeks my bd doesn’t have a phone and he usually takes a spare one of the kids but yesterday while I was still gone kids said he left and didn’t take a phone and he never came back I’m due to give birth any day how will he know if he is not trying to come home or get in contact