This sounds as if you have a neuropathy due to compressive nerve damage.

If it was just due to the shoes, it may resolve in time--unfortunately, nerve healing takes a lot longer than nerve-damaging.

On the other hand, it may just be the first sign of a more systemic problem. Those who get neuropathy often notice it in their extremities first--these are the nerves farthest from the body core, the ones hardest to get nutrients/oxygen to and waste products out of, and if something is going on that is damaging nerves body-wide, the feet and toes are often where symptoms are first noticec.

You should come on over to the peripheral neuropathy board and take a look at some of the Useful Websites:

http://neurotalk.psychcentral.com/thread177.html

Lots of info here, protocols for testing, etc. I would think at the least you would need to have the beginnings of a work-up done by a neurologist.