This is from my doctors mouth. Seven yrs ago. Stem cell research is not advanced that saving stem cells is of use. Even if you need stem cells, as long as you are menstruating, you are producing stem cells. Science will be advanced enough to use that. Seven yrs later this still holds true.
I had two gynaecs for my delivery.Both said the same thing.I took their advice. As for you, your gynaec will tell you. Ask her.