About 3 months ago I started to feel a horrible ache in my bottom cheeks and down the back of my legs, I have always suffered with back pain and lately my back has started making a horroble clicking noise when I walk and been feeling sore at the base of my spine and at the top of my bottom crack. I am due for an MRI in two weeks as my doctor thinks I may have sciatica, but recently I have started to experience a pain of burning and aching around the outside of my vagina, I have heard that it could be nerve damage due to sciatica, has anybody else heard of this?