Family issues! PLEASE help!!?

ok- so my mom and i ALWAYS fight. when i was little, my mom was an alcholic and was always constantly drinking and out alllllll ight and would come home and throw up and stuff. About 2 years ago, she stopped drinking so much (she went to a doctor). but now, even when shes the slightest bit tipsy, i go insane. I dont even want to talk to her or be around her. I just want to punch her.... this sounds crazy but its just the way i feel when she drinks. she doesnt understand me! she blames all the family problems on me and i cant take this any more. this has been going on for too long. i can tell when she drinks and it just bothers me idk why. what is wrong with me?? i just want to have a hapy life with my family but whenever my mom drinks, boooom. we hate each other. i dont get freaked out when my dad drinks, just my mom? i love her but i despise her when she drinks. i dont want it to be like that- please help!