I started taking 750mg of Levaquin last Thursday, March 20, 2008,...

I started taking 750mg of Levaquin last Thursday, March 20, 2008, for a strep throat infection that was not responding to 500 mg. of Penicillin. I took Levaquin last summer due to another bad throat infection and had absolutely no side effects. However, this time I am experiencing a raft of them, from awful insomnia and sluggishness and tiredness, to sever headaches and coughing. I suffer from depression and this is effecting my reaction to the depression medication. I am feeling more depressed. A few days ago, my head started to hurt near my left eye, and my skull became very sensitive on the top left side, midway between the middle of the skull and my left ear. If I cough, it feels as if my head is about to explode. To make matters worse, whenever I try to speak, I start coughing , which in turn hurts my head. My head is painful to the touch. This is awful. Can anyone help me out with some pain relief or something? Mikal