A little over 3 months ago, I injured my toe and developed a large and painful bruise beneath my nail. I subsequently went to the doctor and had a hole made in the nail and the blood drained. This stopped the throbbing; I still have some pain in the toe, but only when I've been on my feet for a long time or wearing high heels. I was told to expect the nail to fall off as the new nail grows in. However, since then it seems that the nail has not grown at all - there has been no detectable growth. Is this normal or is a symptom of something more serious?