Should I get a divorce???

Okay ladies so today my Husband decided to go to a bar with his brother I didn't told him nothing so I went out to have dinner with my friend when I came back home he was taking a shower so he finish and enter to the room he didn't say shiet to me so he got out of the room and left and I found out he went to this "FOAM PARTY" ive been calling and he turn off his phone! I dont trust him he always lies to me. I'm pregnant and I'm very mad right know I want to get a divorce what should I do?