Rookie Mistake?

As I was getting ready to go to sleep on Sunday evening, and I slid my foot under the sheets, I felt as if the "pressure" from the sheet was a bit much on my toe. Realizing that it is not normal for a bed sheet to feel like it is hurting a toe, I had my husband investigate the toe in question with his high output tactical flashlight. "You got some funk under that toenail." We first assumed I had an ingrown toenail that was possibly infected. However, after closer inspection, and triming the toenail in the morning, I realized it wasn't "funk" but blood under the nail. Seems as though I had the toenails too long and it was getting aggitated by the pressure in the toe box of my running shoes from the forward momentum! I related this gruesome story to a friend of mine that has competed in two maratons, and she assured me, that oh, yes, You may have a few toenails die and fall off! Guess I just learned this the hard way.