Trackin my next period

I need help calculating my next period and did not write it down.

I had my last period on october 22 2009, when should my next period start

I got my period on the 18th july for 2 days so when am I due my next one

Im in my 2nd cycle and next week will be my third cycle but because I am irregular there is a possibility that my period will...

Had 2 periods in 1 month and none the next

Um before you have you period do you usally discharge?

brown? so I am 15 and I started my period and then the next day it became brown ? I am VERY worried is it normal?

why do I only get bloody noses when I have my period

Im trying my calculate my next period, can anybody help

I was on my period. it was the 2nd day and my boyfriend came inside me, and again the next day.