Why can't I get drunk anymore?

Okay it's summer and I thought I start it out with a little fun, I bought about two grams of cocaine, and have been doin like a bump every hour or so or a line for like 3 days. And now I ran out and have been drinking. I'll wake up have 3 shots of some jeager, and a beer and keep drinking all day. I'm 16 skinny/ athletic. But now I just can't seem to get drunk, my chest kills me, and I sweat without drinking for a while, and don't think I have a tolerance, because no matter how much I drink I just can't get ped tipsy. Any help or tips would be greatly appreciated, thanks in advance :)