I get my period super irregularily, I talked to a doctor a bit ago and he just said it's because I'm still young. So anyway, my period is completely unpredictable. 18 days ago I got SO sick I felt like I was DYING. I went to doctor after doctor, the first diagnosed me with a sinus infection and pink eye, which I've had before and this was definitely much worse. Doctor #1 gives me medications and I go on them and one day later I GET MY PERIOD. I'm DEATHLY ILL and I get to add "oh I have my period!" to my symptoms. Thank you mother nature! Went to the next after the medication from the first wasn't working, nothing got better, etc. Second doctor diagnosed me with MONO. So I've had my period while having mono.