I'm so frustrated and irritated

Monica
I am currently 8 and1/2 months pregnant. Things haven't been so good between my Bf and I. I hardly ever see him now and wen we talk on the phone it's short or he will call and is mostly quiet on the phone. And I feel like he's cheating on me and no matter how I try to tell him how I feel it's like he doesn't care. I am at my wits end!