Was on my way out to the shop, went to shut the door and the wind took it and it shut on my finger, crushed my finger taking a chunk out of one side but its not the cut that hurts but my finger, it has swelled up quite big, I have strapped it up (still had all the stuff from when I broke a finger a few months ago), I don't want to have to go to a&e on a sat so am hoping the swelling will go down and all will be ok. How long does it take for the swelling to go down?