Hepatitis C Support Group
Hepatitis C is a blood-borne viral disease which can cause liver inflammation, fibrosis, cirrhosis and liver cancer. The hepatitis C virus (HCV) is spread by blood-to-blood contact with an infected person's blood. Many people with HCV infection have no symptoms and are unaware of the need to seek treatment. Hepatitis C infects an estimated 150-200 million people worldwide.
I think they are telling you to wait just in case one of your last injections infected you. So, depending on your insurance or lack thereof, you can test now and if it negative test again in a couple of months.
If you test positive, get a copy of your test results. You'll need to know your genotype to treat.
Good luck!