I get high every day. Is this normal? Do I need to get help?

I am in college at a big party university. I have experienced pretty major trauma I guess dealing with several deaths of family members, including my dad, and a close friend all within the last year. My best friend just had to leave school to go to rehab due to an overdose. Over the past we did coke pretty regularly but not on a daily or even weekly basis. Whenever we could get it we did, and then it would be gone shortly. This year we started buying just one time after another and our tolerance built up so, we decided to try something stronger. We did crack together once but that was it. I haven't done coke in about two and a half months now, and I stopped drinking mostly. My drinking was definitely out of control for a little but now i have no interest in getting drunk and blacking out. I never drank and did coke together though. I smoke marijuana multiple times daily and usually til i fall asleep and I see it is kind of out of control. It is my incentive for nearly everything i do school wise. I sometimes snort my adderall and klonopin, and in the summer I was snorting Xanax and vic and blew-through both prescriptions quickly. I have remained away from coke but I still snort these other things and I always contemplate buying coke just one more time but hold myself back from finding it. I don't know if I should just focus on quitting weed but I really don't want to right now at all. I have found myself fending for more pot, worrying about Incan get more so I don't run out. Sometimes I'll really get the urge to snort something or do coke so I'll just snort an adderall. Sometimes it definitely helps me deal with emotions about my life. I don't know if or how this would be treated or if they treat weed because you can't get physically addicted. But I beg to differ on that because recently for a short period of time I wasn't able to smoke at all and I felt horrible for two and a half days. Exhausted stomach ache headache irritable. Anyway I just don't know what to do that fits my situation to fix the problem if there even is one. Do I need to get help?