Loa symptoms and conditions

I am a 29 y/o male.this month i got a terrible sinus infection, probably due to a month's struggle with allergies. I was initially prescribed Augmenting but after just 1 pill i was up all night with stomach cramps & diarrhea. I was scared to take another dose so my dr. prescribed me Levaquin as an alternative. After reading the warnings I became very worried due to the fact that I already have lower back/hip and joint pain issues. I also work evening freight at Home Depot. After 1 Levaquin yesterday morning, I went to work ready to take it easy and not hurt my body more than it already does... after about 30 minute of simply opening small boxes and putting light-weight merchandise on the shelves, i began to feel extreme tension/aching in my hands and fingers.I was being very careful with my back & neck, but never even thought this might effect my hands??? I woke up this morning hoping it would be gone... no such luck, even after a full night's rest they still feel like i have arthritis, and no my hips (S.I. joints)are popping out like crazy. i am about to take the 2nd dose, only b/c my ears nose and throat do feel much better. I am just glad I picked up paperwork/and can afford to take a few days of LOA if this gets any worse. It is hard for me just to type this now : (. I'm scared.