Read these posts. Many feel the same as you do…because everyone is in the same boat.
http://talk.collegeconfidential.com/college-life/2016222-to-those-who-feel-lonely-homesick-friendless-think-they-chose-the-wrong-school-etc.html
http://talk.collegeconfidential.com/college-life/1808143-having-trouble-adjusting-to-college-making-friends-top-10-things-to-do.html#latest