I am experiencing swelling and pain in my left jaw... just below ear. I ve recently had chronic bronchitis, My oxygen levels were 88-89 last Friday... my doctor sent me home with a nebulizer, and a prescription of Azithromycin, and I had 2 shots of steroids. Could the swelling be a reaction to the steroids? Or should I go in to ER, I suffer from heart disease, I ve had Six bypasses ...and several stents in my past.