My doctor gave me 5 'samples' of Levaquin 750mg for a sinus infec...

My doctor gave me 5 'samples' of Levaquin 750mg for a sinus infection. 2nd night I had frightening heart palpitations while sitting watching a movie with family. Later that night experienced insomnia, depression, body aches and extreme cold feeling all over despite blanket, comforter and furry throw. 3rd day I experieinced severe nausea, dizziness, over-heating, dry mouth, body pain, headaches and motion sickness on pubic transit about 2 hours after dosing. Almost passed out. Was shaking, feeling hypoglycemic. Curled in a ball praying by the end of the 45 minute bus ride. Stopped for water and a bagel, thought it was awhile since I had eaten. 2 hours later after my appointment, same thing again o the bus ride home. Took me 2 hours to calm down. Looked up side effects online and was shocked. My doctor knows I had a head/neck injury ( 3 dislocated vertebrae ), knows I have prescription Vicodin and Tylenol 3 for pain, but fortunately I only took one Tylenol 3 today and no Vicodin for weeks. But I did take Advil yesterday, another pain reliever my doctor knows I use, but conflicts with Levaquin. Doctor also knows that I'm concerned about possible pre-diabetic condition as mother has developed type 2 diabetes. Furthermore, he knows I have had bad experiences with previous prescription medications including asthma inhalers destroying tooth enamel and depression reactions to Singulair. Apparently Levaquin and Singulair both have suicidal depression side-effects. So why was this drug given to me? Basically, who do I sue?