There has been quite a bit of discussion round the topic of premenopausal women in general terms.
Here is a link to one post and a link to the results of a search on fertility.
It might also be worth searching under sex.
I also remember seeing material on
http://www.annieappleseedproject.org/. The was an article looking on the impacts of loss of `fertility', lifestyle v risk etc in a down to earth objective way. I am afraid you will have to search for it. I may already have posted the link in the list in the thread below. I might be able to find it but am a bit busy at the moment.
RB
http://her2support.org/vbulletin/sho...ghlight=rupali
http://her2support.org/vbulletin/sea...d=261174&pp=25