Welcome to this forum. This question and the one on the HIV forum a few months ago both suggest you are hyper-concerned about sexually transmitted infections despite no risk.
Oral sex carries little or no risk for HPV. You're going to get genital HPV someday; everybody does, once they start sexual intercourse. But rarely if ever by oral sex. Oral sex is also low risk for herpes -- not as low as for HPV, but still uncommon. To low a risk to worry about.
HPV usually goes away on its own and stays away. But sometimes it recurs months or years later. That's just he way it is -- but it explains first symptoms showing up many years later. It isn't common, but it happens.
One of the two HPV vaccines, Cervarix, protects against the two HPV types that cause two thirds of cervical and other genital and anal cancers; the other protects against those strains plus the two that cause most cases of genital warts. There are about 40 other HPV types, not prevented by either vaccine -- but they are mostly harmless anyway. No vaccine cures infection after it is caught; they prevent infection but don't cure it.
You should not be concerned about your health or that of your girlfriend on the basis of the oral sex exposures you have had.
Please read the following thread, which explains why you should be vaccinated, but otherwise pretty much disregard HPV
http://www.medhelp.org/posts/STDs/HPV-Contagious-after-later-showing-negative/show/1547688
You can also use the search link to find many other discussions that go into these issues in even more detail. The bottom line is that getting genital HPV is normal and generally not harmful. Aside fromg getting immunized, you really shouldn't be worried about it.
Regards-- HHH, MD