Fiancé freaked the eff out

Backstory: my fiancé, literally almost my husband in a few weeks cheated on me when I was pregnant. My entire pregnancy emotionally on Snapchat and a lot of dating sites. We moved past this for a lot of reasons so I don’t want a huge lecture on that. I understand that’s dangerous territory to stay with. Fast forward and we have a home, a 1 yr old and I JUST found out I was pregnant again with our 2nd. He has never been crazy over his phone- I was on it daily and never knew he was cheating until much much later.

I was on his phone the other day playing a game, fell asleep and forgot about it. Today I went to get his phone so I could see what the game was to download it on my phone and he flipped the eff out on me. Had a death grip on his phone and wouldn’t let me have it. Kept telling me it was his phone (which yes, but it’s in my name and I pay the bill). To me, of which I have pregnancy hormones so idk, it just seems like a huge red flag to me. Does it to you? He’s never acted like that until today and it’s just out of character in so many ways.