Still trying to bear it

First of all I'm new here, I came here because I feel so helpless of what I'm struggling. It all started when I transfer school. When I'm in school I didn't feel it but when I go home I feel so (idk what to call this anymore) all I know is I'm stressed, worried and still find it hard to adjust to my new society. I even find it hard to swallow the foods, I can't eat properly too.. I don't know how to deal with this but my friends keep on saying to be positive. Of course I keep that in mind but somehow I can't.