All schools have counselors so go speak to one now....find a group with some hobbys that you share...such as poetry, or writing...scrapbooking...whatever...do not isolate yourself...I feel that when I do that I just make it worse...get out there and share how you feel...just the way your are doing now.

Everyone feels lost when they enter a new environment so this is understandable...don't feel bad if you are not sure this is your calling...best of all...now you have new friends here!