Mine started off with the same problem. The nail is most likely ruined, so don’t be discouraged if it does fall off. Most likely it will fall off because the new nail is trying to grow out underneath. In my experience, when the damaged nail falls off, the new nail grows in much more quickly.

Avoid the fungus killing treatments you find in drugstores. These most often treat only skin fungus around the nail, on the skin. You need something that will kill the infection in the nail itself, and under the nail bed.

I’ve had very good results with both Tea Tree oil, and Nonyx nail gel. The tea tree oil tended to turn my nails yellow, so I discontinued it altogether. Nonyx smells like vinegar, but works well. Just follow the directions on the box and your nail should grow out clear. Good luck!