I bit off about 5mm of nail, from my already very short nails, it all just came off in a big chunk far deeper down than usual, it was bleeding quite a lot although this has stopped now. However it's 8 hours later and my finger is still absolutely killing me, I know I sound like a total wuss here but I've lost half my nail it ****ing hurts.
Would dipping my finger in vodka or mouthwash help or would it make it worse?
I bite my nails so this happens to me all the time.
Here's what I do: put a blob of Germolene (or similar antiseptic cream) on the painful area, then put a plaster around the top of your finger. It numbs the pain AND stops you from bumping the sore area accidentally.
As a professional fingernail muncher, and someone who once (accidentally) sanded half his nail off in 'design and technology' class, all I can say is ya just gotta protect it (particularly from getting caught/rubbed on clothing) and leave it for a few days/months.
Plasters are fun, but those fabricy ones get caught on rough edges and are excruciating to remove.
Also, though it's painful, I'd advise using nail scissors to smoothen out all the rough edges, and pull out the painful bits which hurt to rub. Worth it in the long run...