Foot Pain

[aobriu2]

The base of big toe hurts when I move it and esp. when walking. what could it be?
I have been stupid and only recently been to see GP about it after 2 years, but the base of my big toe (underneath) really hurts when i walk, bend it, twist it slightly. The pain is worse now than it has ever been. XRays came back normal and GP seems lost. Does anyone have any ideas? I have an appointment with a podiatrist but its not for 5 weeks. I never wear heels and never have done and basically live in trainers. I'm not over weight and i dont do any strenuous exercise. I have tried ibruprofen both orally and topical - still hurts :O(