Charm, that is absolutely crazy-thinking. First of all, worrying about something that DID NOT happen is crazy. And, secondly Hep C is not spread that way.
Please educate yourself about how Hep C and any other contagious disease is spread, before you share spit or any other body fluid.
I am now cured of it, but I had Hep C from a [U]transfusion[/U]. Hep C is not caught by kissing, even if you both had a sore or cut in your mouth. I have been married 35 years and my husband who gets cold sores in his mouth when he is stressed never 'caught' Hep C, even though he sometimes brushed with my toothbrush. Please get educated.