Hi sand5699. I agree with what Montana and Piffka said. Some good advice there.
I know it can be hard to talk to someone, but I think you should try. No one needs to find out about getting help and all. And if they did, it's THEIR problem if they feel you are "**** up in the head" and "not worth their time." (As you put it.) Those type of people are not worth having around. If you're still in college, you should be able to access student counselling. They can either help you or lead you to the person who could help you. There could be so many reasons for you to feel the way you do...hormonal imbalance, life stresses, being away from home (I'm assuming that last one is true)...it can all impact you. Going to school is a big life transition. It sounds like it's something you haven't come to terms with yet since you mentioned you had been feeling this way since starting college.
Piffka was right about finding some type of physical activity to engage yourself in. Not only for getting out, but being physically active helps as an outlet for stress.
Like Piffka, I too was very shy in school, but unlike Piffka, when I look back I think I would have been better off not having my head in the books so much! You need that balance between recreational fun and keeping studies up in school. Having that balance will make college a good experience I believe.
Does your college offer any peer counselling? If it does that would be ideal. It would be a fellow student (albeit someone a year or two ahead of you) who knows what you're going through and will be sympathetic enough to not judge you for asking for help. Whoever you do talk to, whether it be a peer counsellor or a college counsellor, make sure you feel at ease with that person. If you don't ask to see someone else. It's all about doing what feels right for yourself!
I feel for you because I've gone through some of the same experiences at your age. Try not to be so concerned with what other people think. Pump yourself up! You know yourself you're a worthwhile person to know. You're going through some tough times emotionally, but it won't be this way forever.
As Piffka said, it's difficult to advise you more until we know more. Keep us all posted!