Why did I decide to divorce after six months of pregnancy?

That's my husband. On June 38+05, 2065438, I came back with him for the New Year's Eve, and accidentally found him pretending to be single on the Internet, having an affair with netizens, saying that he was going to the New Year's Eve party with his colleagues. Hehe, he came back with his mobile phone, worked hard and got along well with his colleagues. He is a typical bookworm, as long as he studies hard. Just lead colleagues to get along well. No one ever taught me to be nice to my wife, so I cheated. I didn't recover until today, and I lost weight 10 kg. I feel hurt, hehe! Now as long as I see him looking at his mobile phone, I feel like a frightened bird. I'm not pregnant, and I don't know if I want a divorce.