What can do to solve my problem?

Before i was operated twice of Appendicitis and Child Birth i did not have any problem with drinking alcohol but now days, when i take a few bottles of beer, i get drank, loose my memory, my eyes black out and i act like a mad person,talkative, quarrelsome and want to fight which was not the case before the operation. Anyone please advise me on what to do and what may be causing this problem.