Cutting myself?

im 14 and i have been doing this since i was 13, i do alot whenever i feel really bad about something, i tol dmy best friend and eversince then we have been getting in really bad arguments, last night she made me cry about it , and i cut myself twice ( i would put pictures but i dont know how) anyways no one knows about it, and i see a psychiatrist once a month but havent told her , and i am too scared how, What would she do if i told her? please dont tell me too stop because im not,not to be rude but please just answer my question. thanx