Discover pregnant 1 day after cheating

My husband was having regular phone sex with his ex. I always was suspicious of his feelings for her and her swore for years there was nothing to worry about. It wasn't just the videos and calls, but also confiding in her and taking to her about his feelings when he wasn't talking to me about them. Well, the day after I found it all (out 2 year old daughter had the phone when a message came in), I found out I was pregnant. We had been trying for almost 2 years and finally pregnant...i kicked him out of the house. Nobody knows I'm pregnant, nobody knows he cheated. I am so angry I could explode.