Need Advice

So a few weeks ago my boyfriend was having a conversation with his “female friend” who I was told by the both of them I had nothing to worry about. Meanwhile, the conversation escalated pretty quickly, and I heard him say that he wanted to see her naked and he’s been thinking about it for the past five years. I confronted him about it and told the both of them I no longer want them talking. He deleted her number and as far as I know, haven’t spoke to her. But he has another female friend who’s MARRIED and just had a baby which now makes her a mother of 3. She reaches out to him through text seeing how he’s doing, which bothers me because you’re married you shouldn’t be worried about another man secondly I know how draining it was being a FTM of one, I didn’t care to reach out to anyone to see how someone else was doing because I had more important things to worry about with that being said, I already told him that I didn’t trust him due to the conversation he had with his previous female friend and I didn’t want him talking to the married one either because of certain things that she has said that made me feel uncomfortable but it’s like he’ll jumped to her defense and he doesn’t take accountability for it. Fast forward I just found out I’m now pregnant so I’m stressed because I do love him and want to work through all of this but I keep having thoughts n wonders what they’re talking and why he feels the need to talk to another woman when he has me.