I am a 20 year-old male and was prescribed 500 mg. Levaquin for a...

I am a 20 year-old male and was prescribed 500 mg. Levaquin for a sinus infection. I have about 5 or so a year, so this was no unordinary occurence. I had actually taken Levaquin before. I took one pill at 3 o'clock in the afternoon. By 11 that night, I had broken out with bruises on about a third of my body. The next day I went to the ER, and they claimed to have never seen a reaction like this before, so since my vitals were fine, they told me to go home and wait it out. Since then, the bruises have started to fade (and itch like a wild beast) but my right hip has swelled and was very painful. It is now three days after taking THE ONE PILL, and the hip is starting to get better, but my heart has been fluttering/palpatating like crazy on and off. If it doesn't go away soon, I'll have to get it checked out again. Up until this time, I'm a very healthy individual. I had arthritis in high-school, but it has gone into remission. I'm glad i stopped taking the Levaquin after the first time, but am now worried about the heart developement--It has made sleeping difficult and day-time life rather uncomfortable. I wish i had read some of these blogs before I took the medicine. IN short, don't take this stuff unless you need too. I've never had a reaction to a medication in my life, but this caused one. In the meantime, my sinus infection is raging on.