Ok so last night i was doing a shot and i thought that i hit my normal vein on my arm. well i guess i went too deep and hit an artery or something because when i did the shot i felt my hand burning intensely and after it swelled up big time. Now i did a search on blue light and the internet and found several stories of people that described exactly what happened to me but these people said it went away after an hour or 2. now my hand is still swollen its been over 12 hours! should i be worried? has anyone had this happen to them before?