Welcome to SR, laura19.
Alcoholism is a progressive disease. It gets worse as you get older. By 25 I was definitely in the grips of alcoholism, even though I didn't drink every day at that stage.
Stick around SR, do lots of reading, gets lots of support.
Maybe take a break from your wider social scene for a while. Catch up with a friend or two for lunch, shopping, a movie. Look around to see who isn't drinking, who doesn't drink much and stick close to them. Maybe start thinking about doing some more study or taking some classes to a) improve your life and b) give you an excuse not to drink (have to study tomorrow etc).
Make suggestions for social events that don't revolve around bars. Join a team sport. Maybe think about joining AA, SMART recovery or other IRL support group.
You can do it, and you'll feel amazing for it.