A. FSH (follicle stimulating hormone) is the hormone that makes an egg and its surrounding fluid filled sac (the follicle) develop each month. If the eggs become more resistant with age, or if the number of eggs decrease below a critical number, FSH levels start to rise in an effort to make the egg and its follicle
I forgot to mention: when I posted before my FSH had been tested at 4.3 but that was on day 14 - so I guess it didn't mean anything. anyhow that test was in september and this new one was in november.