Quoting Uh-milly'Yuh:" You count from the start of the day after your period (if it starts in the PM) until the day your next period starts. "
Quoting *Brittnee*:" So if it ended on sunday night, I count monday (oct 8th) till the day it starts again which should be ... [snip!] ... 28days? Just wondering since all the ovalation calculator says I should ovulate on friday, which doesn't sound right. lol"