Zoloft side effects - Back Pain?

Hi everyone, I am new to this website.  I was diagnosed with depression about 6 years ago and was prescribed Zoloft.  Soon after I developed chronic pain in my back (I had back pain before because I have always had desk jobs) but this was worse.  It's a burning pain in my mid to lower back and it stiffens during the day (after any kind of exercise or movement) and it is especially stiff when I wake up in the morning.  I have to lay down several times a day because of the pain.  My question is have any of you heard of maybe Zoloft causing back pain to the degree I am experiencing?  Is there a possible link between Zoloft and back pain???  Thanks for your help.