my numb big toe

About a month ago, after a rigorous day in high heels, I noticed my big toe was numb. I also have a genetic bunion on that foot (which also throbs at times) and am prone to ingrown toenails. I have been wearing sneakers every day since but find that the toe is still a little bit numb. Should I be very worried? I am currently away from home and have no health insurance to get checked out, but wondered what this might be.Worried.