Hi, I have been smoking small amounts of crystal meth occasionally since November last year. My kidneys are starting to hurt and I also get chest pains and shortness in breath. I have cut back on my use of the drug and have been clean eating and exercising six days a week. I mainly only smoke crystal meth in the weekends now but I am concerned something is seriously wrong with my body and I am prepared to do whatever I can to prevent any harm happening.