Help....

Ok so long story short my husband is an alcoholic (who is trying to get better), and over the weekend he went out with his friends on Saturday night didn't get home till almost 3am. Then he leaves again around 9am to go drink some more. I was furious we have 4 kids together that he left me with. I called him and told him that we needed a break until he could put his family first. Well he then proceeded to block my number block me on Facebook and everything. The only way I could get ahold of him was thru his messenger thru one of his friends. Well I feel bad about getting mad at him and try telling him that I don't really want to take a break. Well he ignores me all day so.i don't get a chat tell him. Well I found out that one of the girls he used to sleep around with when he was a teen was in town Sunday night and they had sex. He told me everything, and how sorry he was. My question is how do you recover from that? He knows I'm insecure about myself and that made it worse. He has been non stop apologizing since Sunday night when he told me. I don't want to leave him because I love him and we are due with baby #4 next week.