You need to see a psychiatrist. Your symptoms sound a lot like real depression. It's possible that it will get better on it's own and you'll make some new friends and see the bright side of life, but it's just as likely you'll get worse. Depression is a brain chemistry problem that makes it almost impossible for your brain to process reward and pleasure. I know people who have thrown big chunks of their lives away by not seeking help. Please don't be one of them.