Do i need help ,should i tell my mental health care Dr what should i do?

i wont to hurt myself i wont to get ride of the sad feeling i am having i don't wont to eat anything..and don't know what to do.i have a good life but.i don't know what is wrong with me....and i don't know if i should tell my Dr how i been felling because i don't know if i should or not. am afraid what she might say or do i don't know.but i go to a mental health care MHC but i go there for my adhd i believe i don't remember but yea and i sometime wont to tell her how i really am really feeling but then again i don't because i am afraid what she might say or something i just don't know what to do.but i am kinda get scared because i was sad yesterday and today and i still am and last night i drank something i should of not but then i go to church it just mad it worst hoping it make me feel better but it made me feel worst and i don't wont to eat anything at all now because how i feel i guess..and when i don't eat i feel sick like i am going to puck i don't know what to do i scared my friend because i drank when i was sad and he said i was scaring him.and i just don't know what to do any help please tell me...and don't leave a comment if u going to be mean about it..and i just won't to give up on ever thing that i stop..but i still hit thing and i just don't know what to do..help me please,