ouch, nikki!!! i thought i was the only clutz on the board!!! the big toe helps balance and helps you to walk. yes there are tendons in the toe. if i were you i would see a foot doctor. or go to the emergency room. tell them when you had your last tetanus shot and let them exray it. you didn't say exactly on your toe where the nail went but please try to see a doctor. a foot doctor would be the best because he would know just what was damaged. sorry i couldn't help more, hugs and blessings.