Should I break up w my bf/card reading

Okay... so recently I have been dealing with alittle post partum depression. I’m getting better but my bf/child’s dad and I have been arguing a lot over my insecurities. I always tell him I think he’s going to talk to someone else. But that’s just how I feel :(. He goes to work everyday and he treats me good. I just sometimes will see one of his exes call him or something and they’ll be on the phone for like two minutes. But why would he even answer? I never see any text messages or long conversations. The three times she called they were all under two minutes. Anyways I got a card reading and asked the lady does he have feelings for someone else. She basically told me she sees a secret relationship and someone from his past is still lingering around. Spot on!! So now I’m curious if I should break up with him. It was kind of like she told me what I already felt. But I could be over exaggerating. I’ve asked him and he always tells me what his ex says. He says she told him one time she had a date. Like okayyyy??? Anyways this is all childish to me. What should I do?