Congratulations. You do not have HCV. We do and I haven't seen anyone here obsessing about where they may have got it. How does it matter anyway?
It doesn't.
The only thing I can say is all things are possible and no test is infallible.
Many people have no idea how they got hep C.
This forum is comprised of people who's lives are touched by hep C.
We aren't professionals.
If you want better answers than anyone here can give you, I suggest you seek out a competent hepatologist.( liver doctor)
You could always redo the the first test that checks for the anti body's (not sure which one that is, the EIA?)
if it turns out you did have it, wondering where you got it is a completly normal thing, I think everyone goes through that stage...eventually you will come up with your best guess and just go with that, or give up trying to figure it out
bottom line is you seem to be ok now, but I know this whole experience is enough to drive a person batty!
Not sure why you are pressing the issue. If the numerous tests you have had were negative then you do NOT have Hep C. Move on with your life. There is nothing else you can gain from a public forum. Best of luck