Two months ago I hooked up with a girl who said she had a cold (let's ignore the stupidity on my part there). The next day she said she went to the doctor and told me she had mono. Naturally, I prepared for the worst because I heard that mono has a 5-6 week incubation period. About 6 weeks later, I was still feeling fine and went to the doctor to get tested. Mono tests came back negative. How is it possible that I didn't get it?
Is mono always inevitable or is it possible to beat it with a solid immune system and not become infected even if one is directly exposed?