Just a slight nerve damage. It will repair itself over time. When nerves are regenerating, you might feel odd sensations in other parts of the finger or hand. Not to worry. It's just those 'circuits' re setting themselves.
You possibly might lose that fingernail, too, but it will regrow.
IT may be damaged or injured small sensory nerve. But it will regenerate.
Hello, you might try putting Arnica ointment on your finger. Arnica is a wild flower which has medicinal values. It has been known to help buising and heal the small blood vessels under the skin.
Hope this is helpful to you and that your finger gets better soon. - I found Arnica at Walgreens by the Mexican remedies. It says on the jar that it is for cracked skin on the feet - but it works on other conditions as well.