Bad night

A
So, I am 19 weeks pregnant with my third baby boy. Haven't worked in three years we found out about number 3. Well, last year my husband goes out of town for work. After being there for a while, I found out he was talking to other females while he was there. Not sleeping with, but talking to. Flirting. Talking about hanging out. Not ok. We were in a rocky marriage, so I decided to work really hard through it. We were doing great, I got pregnant, I trusted him again, shame on me. Tonight, I get a message from his ex showing me screen shots of his plenty of fish profile he has while he's working in Oregon. (she lives there too that's how she saw him). I confronted him, he lied, at first, then told me the truth. Says nothing physically happened. (I believe him, because he only swears when he's not lying). But I am heartbroken. I dont know what to do. I can't trust him. He's coming home Friday and I am just terrified... What do I do? Can I honestly get past this? Should I have to? I love him to death. And my boys adore him. I am torn on what to do. Advice :(