All blood work was normal but hep c was positive. can i still have liver cancer?

May be later: You may need more than blood work to rule out liver cancer, e.g., ct scan. However, chronic hepatitis c does put you at risk for liver cancer. You should consider getting treated for hep c as it is possible to rid a person of the hep c virus.

See a specialist: You're unlikely to have liver cancer, though your long term risk may be higher. You need to find out more about the hepatitis c. Is it active (hcv RNA positive)? Is there evidence of fibrosis or cirrhosis (liver ultrasound, biopsy)? How treatable is it (hcv genotype, il28 genotype)?

Bloodwork not enough: There is no blood work that can screen for liver cancer. AFP is a test that is sometimes used, but is so insensitive that it's routine use is no longer recommended. The only way to screen for liver cancer is with an imaging test such as a dual-phase ct, or an mri. If you have developed cirrhosis on top of the hep c, you should be getting imaging tests every 6 months to check for cancer.