I am a 34 year old female and weigh about 7 and a half stone and I am 5 foot 6 incs tall. For the last four months I have noticed a numbness in the back of my leg and I get pins and needles in both my arms and legs when I sleep. Over the last week the numbness has got worse and there is a tingling in both my feet and fingers. I recently went back on the pill at the same time as this has started having been off it for eight years while I had my children, is this likely to be linked?