Lisa:
I don't think anyone can predict who will get it back and/or for how long.
I was 39 when I started chemo in October of 2004. I stopped getting my monthly cycle with the first treatment. I ended chemo in January of 2005, still no monthly cycle. In June of 2005 I threw out all of my tampons (I shop at Costco so I used to buy the big boxes). Sure enough it returned the next month for a few hours (kinda funny!). In the fall of 2005 I might have had it again 2 times but never longer than a day. Since then nothing (except for when I had my reconstructive surgery in March of 2006-- the nurse told me surgery can bring it back-- like I did not have enough to deal with at that time!
) I expect I will get it again when my expanders are replaced but other than that, I think I am done.
Unfortunately, all you can expect is the unexpected!
Good luck!
Monique