I went to the doctor Friday night worried that I had pink eye. He...

I went to the doctor Friday night worried that I had pink eye. He says "No, your eyes are fine, nothing wrong there, but your cough sounds awful." so he listens to my lungs and says I have bronchitis. Yeah, I had a sinus infection a couple of weeks ago and the cough never went away. So I say, ok, what can you do? I have no insurance, the place I currently work at is cheap. He brings me 5 sample packets of Levaquin, 750 mg. Says to me "These are really good. Take one a day for the next five days. They should do the job, they are $25 a pill." I think, wow, that's some expensive medicine. ANyway, I come home and take a pill around 8. I have a second job that I work on evenings and weekends, so I have to get up in the morning to go. I can't sleep like usual. I wake up every hour or two. First I am sweating, I get up and turn the heat down. Second time I wake up with tears running down my face, I'd been having a nightmare about one of the kids I watch dying od SIDS (How twisted is that?) Then I just keep waking up.... I go to work yesterday morning and after about 2 hours I start to get real light-headed and nauseous and my ears were burning like someone had embarrassed me to the extreme. I came home after being at work 4 hours. I felt sick to my stomach all day but thought it was because I hadn't eaten. WHen I finally ate, I couldn't stop eating. Then I did, and 2 hours later I was feeling sick again. Not thinking anything about it being the drug, I took another one last night at 6:30. When I finally went to bed at midnight, the nightmares started all over again. I wake up crying, my body wracked with sobs, tears rolling down my face. I don't want to keep taking this medicine if it is causing all of this but I don't have the money to go back to the doctor for something else, and I can't afford to still have bronchitis. What am I to do?