I was diagnosed 2 years ago with FM. When I stand for more than 30 to 45 minutes my thighs go numb. When I asked my rheumatologist about this, his response was that I am overweight and my stomach may be pushing on a nerve. I was quite surprised by his answer. I know that I am overweight, approx. 45 pounds, but didn't expect that answer. Does this happen to anyone else? Is it part of FM?