Hi - I started to smoke meth during the last 4 months but not regularly.. Do give a break every now and then for 5-7-10 days. Last time I smoked meth (couple of days back) about 200-300 grams. Since that I have pain in my left shoulder blade. Massage relaxes it but whenever my back is not resting against the back side of a seat or when am not lying down or starts to hurt. Please advise