Ritoko,
Hep C is a nasty thing, I am actually more nervous around folks who has it than HIV patients. :)
I don't think that you may have gotten it, if you did dunk your whole finger into the vial...than it may have been another matter. I would not worry too much, but if you are that nervous try...
A) Asking on Hepatitis forum:
http://www.medhelp.org/forums/Hepatitis-C/show/75
B) Get checked