Shoe strings symptoms and conditions

I took Levaquin for a sinus infection March 26th... 5 doses of 750 mg. I felt slightly better initially but that lasted only a day. I think it was prescribed wrongly, I had a virus and was getting over it... not a bacterial infection. The problems started about a week after the 5 day course ended. I ended up in the ER feeling like I was going to die, some strangeness in my breathing and feeling as if I was having a stroke... like I was going to pass out. They found nothing wrong except an elevated blood pressure and did a d-dimer to see if it could be an embolism (at my insistence, I had no idea this could be from levaquin and thought I was having a stroke. After the ER visit, I just felt like I had the flu, but I didn't... weak, extremely tired with some muscle aches ... two weeks out I had a lot of pain in both legs, like charlie horses that didn't go away... that lasted several days to a week... the weird depersonalization and the anxiety has been intense throughout. Constipation (never ever had it before this drug) started about a month out from taking it. I still feel pain in my legs from time to time and a feeling like there is a tight band across the top of my left foot... like when you tie your shoe too tight and need to loosen the shoe strings, but I am not wearing shoes.