I usually have chest pains when I do some coke, but the last time I did it (it was two lines only) my left and got numb, my fingers were weird a s my fingertips turned brown. I was really freaked out and didn't know what to do! I bought an eight ball and I'm doing about 6-8 lines a day everyday. Also, the back of my head hurts a little. Is it normal? Can someone help me pleaseee!