I just started taking Azithromycin, 500 mg for acute sinusitis and severe bronchitis. I also have diabetes, hypertension, been diagnosed years ago with mitral valve prolapse & fibromyalgia & Raynaud's. I have a lot of allergies....penicillin, sulfa, etc. I probably am paranoid when it comes to how I feel after any new medication. Right now I feel like my face is larger, especially around the jawline, but it's not....and I feel a little flushed. I also just took my regular meds about the same time plus my Vit D....have a Vit D deficiency. Anyway, just wondering if this flushed feeling, etc was anything of which I needed to be concerned.