Pregnancy/Relationship Insecurity

So I am now 32 weeks pregnant and very excited to meet my little girl👶🏽. But lately I haven’t been feeling like myself for multiple reasons, Clearly my body changing is one but when I was around 20 weeks my boyfriend was hanging out with his ex very often and tells me they are just friends and nothing happens but they never invite me to join them and I haven’t even met her.

Recently they have been planning to go hang out again but it’s been raining so I guess they canceled? The last few times they hung out he was gone for about 3-5 hours just “getting coffee” and the most recent they went for a nature walk and I tried to call him for about 2 hours straight because I was feeling some pain and I was worried but he didn’t answer.

He keeps trying to reassure me that she’s in a relationship and she wouldn’t try anything and that he wouldn’t go behind my back doing something like that. I don’t know if it’s just my insecurities making me think like this or if I’m correct in my assumptions. At this point I just don’t know what to do anymore 😩