Re: Possible pregnancy? Please read.
I am assuming you are very young. If so, then your periods may be very different from month to month. And sure, mono could affect your period. As the years go by you'll realize that just about ANYTHING will make your "friend" change! <IMG SRC="http://www.healthboards.com/ubb/smile.gif"> Make sure your partner learns how to keep you protected. Don't be shy, speak up and tell him how to work those condoms. The other post states your most fertile time is probably smack in the middle of your periods, and I agree. If you're still worried, buy a brand name pregnancy test (even a few days before your period's due) and put your mind at ease. Good luck.