College is going awful

So I went to college with pretty high hopes of trying to reinvent myself and having friends unlike high school. Unfortunately, I had no idea how to do this so I ended up back where I was in high school with no friends. I tried to be social but apparently tried way too hard and came off as annoying. On top of that my grades haven't been where I want them to be but not from a lack of trying. This has led to a huge amount of stress coming from home as I am supposed to become a doctor but the way things are going that is unlikely. What really snapped was when I was invited to go out to eat with some people one night but one of them really didn't like me so I was uninvited. Since then I have basically been drinking whenever I'm not doing work and thinking about how easy it would be to jump out the window in front of me and end all of it.