What was your experience with mono?

I found out just yesterday that my boyfriend may either be an infectious mononucleosis carrier, or if he's just been exposed to it due to his brother being sick with it a couple months ago. hHe had a high antibody count and I believe your body makes antibodies similar to the mono bacteria when you have been exposed but not sick. I have to wait until Monday to find out. In the meantime I'm getting blood work done this week to see if I'm a carrier as well. I'm a little worried as I've never had an experience with this kind of blood infection, has anyone run into this before? What should I look out for? Anything that really helped you feel better?