Hi there :)
Can you tell us a little more about what you're using & what's going on with you?
As Evolver said could you give us more info?
I found this. It relates to IV use in general. We need more info about your specific situation.
"Different routes of drug administration also produce different side effects. Intravenous users frequently develop illnesses associated with the preparation of drugs for use (i.e., mixing/making) and the use or sharing of unsterile needles, including HIV infection, hepatitis, tuberculosis, lung infections and pneumonia, bacterial or viral endocarditis, cellulitis, wound abscesses, sepsis, thrombosis, renal infarction, and thrombophlebitis (Sowder and Beschner, 1993; Gold, 1997)."