I'm Thirteen and need help?

Alright im thirteen and looking at me and even being a close friend of mine you would tihnk im totally normal. Ive only broke down once in front of my girlfriend and had thoughts about suicide. In the past ive stole airsoft guns and ciggarettes. Yeah i thought ill try smoking its cool if i dont like it ill stop. Ide try one ciggarette a day but in about two days it was a pack. i was expelled fromschool but im back and on honors roll with alot of friends and my records were erased. Like several months ago i tryed cutting my self. stopped. two weeks ago i just became so depressed started cutting and for example last night i cut myself 26 times and afterwards had suicide thoughts talked to my friend hung up on them. afterwards i went downstairs got out the red bull and parents vodka. never tryed drinking. i did this time got drunk swore off my friend and through up and now im sitting here hungover pretending to be sick.......suicide thoughts cross my head everyday. dunno wut todo.plez hlp