so yesterday my finger got pinch-crushed by a door (a small part of the finger got jammed into a door when it closed but not the full finger so it was like a pinch but more painful). the result is what my mum said was a blister. it did go a bit purple but that's gone now.
when i used a pin to drain it because it felt weird when i typed (because of where it is on the finger is bring press on a key or 2). this morning it's filled again. when i first drained it i thought it was puss but the liquid was clear and when i had an infected finger before i had to keep squeezing the puss out of it as directed by my doctor and the pus wasn't clear.
so i am wondering what this clear liquid is and what it is used for?