I don't need judgement, I'm only venting

Is it bad that I went through my boyfriends' phone and he's on a dating site, more like a porn site. And he hits on them and asks to take them out. Take in mind that I am currently 35 weeks pregnant with his child and I've been living with him for two years. I just feel so grossed out. I feel like something is wrong with me, I just wanna walk away from everything. It hurts me so much yet I haven't told him a thing about or questioned him yet, I'm too upset to want to bring it up. I just wanna get away. Am I over exaggerating to be upset or grossed out. I just find it so disrespectful especially how he comes home and kisses me like nothing is wrong.