period every other month the second friday of the month

Dose every girl have 2 have her period every month or is everygirl different?

hey pplz I have a weird question but anyways I have had my period for like three years but in October of 2008 I just started ...

Can I still get pregnant with a period every 17 days? I've had a misscariage 5 months ago?

Why do girls sometimes get their period twice in one month???

Okay so I did it on like november 22nd unprotected. And I had a period every month since then. Could I still be pregnant??

Why has my period been going non stop for a month?

Some months I don't get my period. Or if not that, I'll get it for a few hours like one day out of the month.. It's really cr...

I'm nearly seventeen and I'm fairly certain I got my first period just after I turned thirteen. From the very start I have on...

Pl. let me which the safe period to have a intercourse when the periods are on 16th of the every month.

I have been on my period for a month and a half and I dont know what to do about it...it wont stop! Help!