I didn't know this.
I just bought the book "Taking Charge of Your Fertility". I have heard GREAT things about this book and figured I would spend my Christmas money on it. I was sooo stupid not to have bought it sooner. This book is GREAT!
Anyways.... in there it talks about being able to tell what side you are Oing on by checking a lymph node in your leg.
This is the only link on the web I could find on it. (scroll down to magagment)
http://www.woomb.org/bom/lit/teach/reprodhealth.html
I had a feeling I was Oing yesterday and/or today. I have this lump on the right side..... Too cool!
So if you are close to Oing check yours too!