Yeah, that is what I meant.
"hope your immune system was strong enough to kick it out. " did you mean our immune system to suppress it?
What the CDC says is that for every partner one has, the chances are 20%. So if you've had 5 partners, you have a 100% chance of being exposed to it. Basically, most doctors says that after 4 partners, you have been exposed to multiple strains. This is why the CDC says to "limit the number of partners". Condoms provide 50-75% protection and is a good thing to do always. The chances of high risk or low risk are the same.
Look, its too late to travel to the past. All it takes is one infected partner, even if you have had only one. Given that you've had ten, you should assume it is likely but no one can tell you for sure. Keep testing yourself and hope your immune system was strong enough to kick it out. Then, stick to one partner and hope he's clean. Since men cannot be tested, they can only guess at how clean they are. Yes, you should get those bumps looked at by a GYN or dermatologist. Should you be diagnosed with it, realize it is not the end of the world. This is so common that anyone who has had sex with multiple partners should expect to have it.