@jenblalock , Hello Jen. Sorry to hear you are feeling poorly. I was feeling like I had pneumonia coming on last week.I had a stabbing pain radiating out the backside of my right shoulder blade. I was already halfway thru my 28 Day cycle of tobramycin when that came on. My dr. phoned in a prescription for Levafloxacin. I am thinking it is a broad spectrum antibiotic and will kill any gram postive infection since I got sick while on the tobi which treats gram negative bacteriums. I am starting to feel better, but still coughing up green. Call your dr. and ask what you should do. Do you nebulize the 7% saline twice a day by any chance?