Am i being immature and overreacting?

So i have had a zillion of accusations from my husband whenever I go out to take care of my responsibilities, like buy groceries, diapers, do laundry, etc. My husband would say im cheating on him if i take 4-5hrs. I never once accuse him until today.

I left for work to do overtime, my husband was drinking after i left at 2pm, and texted me that he wanted more at 4pm. He told me hes gonna take the bus to go buy more drinks. He never told me when he left, but he didnt come home til 1140pm. I came home from work before he did. He came home drunk and did not have any alcohol beverages with him.

I ask him if he went to the bar and he got mad at me that i need to stop being a bitch and stop trying to start shit with him. I told him that if i did what he did today, he would say im cheating on him, so i think i should feel that way about him too. He calls me a bitch again, refuse to talk to me and went to bed. I just let him be.

Since he always accuse me everytime of cheating whenever i go somewhere without him, I feel like hes the one doing it. What do u think?