Crying uncontrollably when I should be so happy....

I’m 37 weeks pregnant today...my boyfriend and I don’t live together but we visit each other regularly...I will admit though that a few weeks into my pregnancy right around when my morning sickness started we haven’t been spending as much time together mainly because im too sick to do anything...he wants to have sex everyday and even though I don’t feel like it all the time I do take his feelings into consideration and try to force myself to have sex...today I decided to spend the day with him at his place and for the first time since getting pregnant he didn’t try to have sex which was a bit odd...he just wanted to hug me and be close to me and rubbing on my stomach...kept telling me how much he missed me...this evening as I was getting ready to head home he got a video call that he declined...he then looked me dead in my eyes and I noticed his own was filling up with tears..all he could say was “ I’m sorry but I cheated”...here i am sick with this man’s baby about to go through probably the worst physical pain of my life and he breaks my heart so bad... I can’t stop crying and I have no idea what I should do...💔💔