I wasn't sure to put this in depression, or this board - Sorry if its wrong!

Im 17, I've always been a happy girl. I rode horses for the longest time and I was never sad, I always made the best out of everything. I moved away from my old state last year in the middle of junior year. It upset me, but i moved on and made the best of it. Slowly, I started to get into different things. I smoked weed before i moved, but when i moved to where I live now I began smoking every day. I was still happy as a clam. Then in august, i got in a huge fight with my sister and brother in law and they kicked me out of their house for a few days. Due to the weed smoking. Then, to try and be a defiant little teenager I did the worst thing i could have ever done to myself which is sell my horses. Because at the time i just wanted to smoke weed all day and i didn't care. After that, I started experimenting with other drugs. I tried shrooms, and after that weed wasn't anything too special anymore. The shrooms turned to norcos, xanax, binge drinking, and i've also been doing molly & whip its. I haven't been happy, I don't know how to be happy anymore. I always have this sad feeling in my chest and I can't get it to go away unless I'm messed up on something. I'll start to have a great day, and then someone will say something so small and irrelevant but it hurts me and puts me in a sad depressed mood for a couple of days. For a while now, I've been waiting for this 2 month period of having bad day after bad day to end but it never does. I cry for no reason, i rarely go to school anymore and I have lost all confidence in myself. I don't know what to do to make this better - I did admit myself into drug counseling. But its only once a week. I hope i don't sound like a winey baby, has anyone else gone through this? i can't seem to break this streak of being sad.