I just finished a 7 day prescription of Levaquin for a ear, nose ...

I just finished a 7 day prescription of Levaquin for a ear, nose and throat infection and I am truly scared at what I am reading here. I cannot imagine having these headaches keep going for much longer. I have had the worst headaches I have ever had. They come once a day and are the worst. A couple days after starting the Levaquin I felt really anxious and almost paranoid. At one point I wished for death. That feeling has gone away for the most part but the headaches are still here. I am afraid to go back to working out because of the tendon problems I've read about. Can anyone tell me if the side effects eventually go away???