Found this thread looking for more info about long luteal phase and I am responding in the hopes of helping anyone else looking off info. I am NOT TTC, but rather just trying to be able to predict when I'll get my period as my cycle has always been incredibly irregular. This prior cycle, I am confident that I properly tracked my luteal phase at around 21 days, possibly even 22 days. I am 34 with 2 children and no family history of early menopause, etc. I have to think a long luteal phase is much more common than doctors say- I mean really, how many people actually track it? It scared me that it was so long and I plan to ask my dr about it, but it seems to be harmless and, if anything, helpful to those TTC as it gives the embryo more time to implant.