Levaquin and crestor

I was prescribed Levaquin,by a dermatologist, 500MG for 10 days for a skin infection. I began to have severe muscle/tendon pain within a few days. I took it for 9 days. I stopped taking it 8 days ago, and still have severe arm pain. I feel like I've been doing more than 100 pull-ups. I find it difficult to carry a bag, as it adds to the pain. I've tried Naproxen, but it doesn't seem to help. The pain is worse earlier in the day. I talked to my primary Dr. 2 days ago. He thinks it is from the leaquin in combination with Crestor", a cholesterol lowing drug I take. I also take Femara and effexor. I'm wondering ifanyone has had drug interaction problems when taking levaquin, or if this pain is just from the one drug.I am also experiencing unusual (for me) fatigue, and wonder if this is related to Levaquin also.