Ok so the person who taught me to use needles didn't teach me very much other than how to do it.. I mainly iv hydromorph contin, and once in a while I'll miss, today I couldn't find anywhere so I tried near spot I missed a couple days ago, When I was moving it around to flag it string of white shot up the barrel... Did missing cause me to get an infection??? please help!!

worm, then it an infection and you will need to take the proper measures, hot compress to centralize the infection, this does not go away buy itself generally, so go see someone.. it usually just gets worse, and please use safe injection techniques, as you most likely acquired the infection from your own skin while the needle passed through, so please disinfect every injection site.