I'm 40 years old and my husband and I have been TTC now for 3 ish months. I have 3 grown children, and he has none as of yet.  My first cycle was 28 days, followed by a 24, then a 33... I'm currently on CD 22 ( of who the hell knows how long of a cycle this month) and started having brown spotting today... So here I am impatiently waiting to see if AF  is early again.. Hoping she stays away and it may actually be implantation..