It is great you tested neg for Hiv and hep c 6 months after your sexual exposure with your ex bf.
You are, without a doubt, neg for HIV
and HCV. 6 Months is the outer limit for testing
for hiv and hep c.
However, were you tested for hep B? Hep C is NOT a Std and is mainly transmitted through blood to blood contact, such as blood transfusion and intravenous drug use.
Hep B, on the other hand, is a classic STD and is transmitted mainly by sexual contact.