I have recently begun swimming and have noticed that in the water the bottom half of my legs "feel "different to the rest. My feet constantly feel cold to me and occassionally when driving I do not feel where my feet are in relation to the pedals.
It is the water thing that concerns me most and idon't want to worry my GP if it is normal.
I would speak to your GP - that's what they're there for. It could be any number of things, some more serious than others, so a proper diagnosis is essential.