Pregnant and found out...

Almost 5 months pregnant and found out I'm being cheated on with his ex girl with he has a kid with which he Denys the kid is his!!! Then my bad told me a month ago his phone broke and didn't turn on and that he put it away never said where exactly he put it away at!!! Today I walk in our bedroom to take a nap while he was suppose to go with his buddy to handle something """" I catch him sneaking the phone in his boxers and and I ask him and he says no it's not his phone so I tap him and find it was the phone and was perfectly working and 100% charged . I don't get why he would like about a damn phone !!! Oh wait maybe cause that's the phone he been keeping contact with his little friends! They he laughs in my face. I'm so stressed out. Like wtf do I do. I'm pregnant with his child. Who does this?!!!! I just needed to vent