ik hes cheatin, what to do?

my husband went out to drink w his coworker. 1st he told me its the mexican guy, now he changed it to the asian guy. talked to him about it and he made me the crazy girl, misunderstanding him. but i clearly heard it. when he went, he told me hes only going for 4hrs, but ended up coming the next morn, saying he was too drunk to come home. but he didnt even have a hangover! ik hows hes like the next day of being drunk, been w him and seen it for 5yrs, hes always sick after getting sober from being drunk. he came home and gave me the cold shoulder, went to shower and sleep. when he woke up, he wanted sex. i just know it that he was doing something he shouldnt be doing. if i were to do this to him, he would accuse me of cheating too he said it himself. but i dont hide my phone from him like how he does to me. he says he wasnt cheating on me. but i think hes lying. hes cheated before, not w me, but w both of his ex. sighh, what should i do? cant check his phone, cant talk to him.