question: Hi! I have been smoking weed for the last 3 years and smoking too. Up until recently , everything was fine. Some 4 months back, one day, suddenly i felt this sharp pain on the left hand side of my chest after smoking weed. I had a complete check of heart and found everyhting to be ok. Even the X-ray was completely fine. This pain occurs only when i smoke weed and not when i smoke.Is it some allergy ? Thanks!