How much variance in Luteal phase length is considered normal? : r/FAMnNFP

a) Daytime variation in mid-luteal s-progesterone and s-estradiol in

Menstrual cycle length and body temperature c

Percent change in femur length (FL), biparietal diameter (BPD)

FAM Basics: What is the luteal phase of the menstrual cycle? - Natural Womanhood

My luteal phase seems shorter than average. Thoughts? : r/FAMnNFP

Luteal Phase: Symptoms, Causes, And Hormones

Could I get some insight please? What causes drops like this near the end of a cycle? Usually I'd be confirming a temp shift by now. Do I need to scrap this

Follicular Phase - an overview

Normal Menstrual Cycle