I was prescribed 3x 250mg of levoflaxacin for a UTI. Three hours after taking the first pill I started having leg pain in my right thigh. I couldn't sleep at night due to the achy/cramping feeling. The next day I went to urgent care and took another antibiotic for the UTI (Monoril 3000... I'm in Europe). The leg pain, while less intense the next day, was still there and shifted down to my right calf and achilles tendon. It's now a week later and I'm still having soreness in my achilles. Thigh pain is pretty much gone. I thought the medicine would be completely out of my system by now. Can the side effects from this small amount of medicine last this long? How long till the soreness in my achilles goes away?