Hi, I am 29 years old and just had a sinus infection and have chronic allergies/hayfever. I have pretty much stopped smoking, but every few days i might have 2 cigarettes. After I smoke the 2 cigarettes, the next day I have a bit of chest pain on my right side, under the collar bone and leading towards the armpit area. Am I having this pain due to my allergies? I had a few x-rays done of my chest and everything was normal and had an ekg done as well, and was normal. I have had a bit of anxiety ever since I quit smoking lately.