Trusting your gut about bf cheating

Ive only been with my bf for 1 year and all ive been through is stress and lies. Now, im pregnant by him but thats not whats stressing me out. What's so funny is how he has insecurities about me talking to other guys when I told him I will drop that if that bothers you cool. But, behind my back i felt like something was really wrong about him an why his so strong on me talking to my friends who I knew since middle school I know my home boys parents in they know my parents its a haitian thing everyone one knows everyone lol. Anyways, I went thru his phone even though ive never done that in a relationship before something wasnt right cause his cheated before with his babyma when they were in a relationship ans now I seen on his phone conversation on sexual websites, craigslist (where he wants to meet up), cashapp sending random females money etc. So, my thing is your not happy your living with me living free rent literally a whole year and only paid rent 1 time and then your disrespect me infront of my kids by yelling at me over non sense. Ive spoke to his dad if his son can live with him in he says thats going to be a problem cause of his wife dont get along with him.