Before we started ttc 3 cycles ago my af was like clockwork, 28 days, first cycle ttc went down to 26,i could handle that cos it happened when trying for dd but second cycle went to 24 days and now this cycle I have started brown spotting this morning at only 22 days!!! Why is this happening!?! I don't temp but do use opks and I have quite sharp ovulation pains so know i ovulate at cd10 so this also means my lp is getting shorter and shorter! Of course I've been googling and found some people saying it could be pre menopausal! Aarrgghhh what I'm only 32! Has anyone else experienced this? Any help big or small will be much appreciated thank you xxxx