Hello, I had a Urinary tract infection and was given Levofloxacin for 12 days. The infection went away, but I had side effects for the whole course of feeling faint, and a little nauseous and loss of appetite. The problem is, I finished the medicine five days ago, and the side effects are not going away. My brain feels very sensitive to stress, and generally unwell. My appetite is also less then normal, and my stool is looser than normal. How long do the side effects last for this drug? What should I do?