Suggest Treatment For Blue Spots Appearing On The Body

hi i am a 26 year old female, recently got introduced to cocaine injection, been doing it for about 5 months now. At first there was no problems my b/f would do it for me get blood all was fine. Now its like i can get a vein get it to register but almost always swells up and never feel the shot, well shortly after that started getting blue spots or little like patches over some body parts, then its like now immediately after my whole body turns blue i get blue streaks up and down my fingers my arms my face, and i don't understand what is going wrong i am definately not missing it always registers, but really scared of something serious.