I had so much hope for you reading down your posts, i'm sorry that AF showed up for you. I've had this same problem twice now, hence why I clicked on this thread, and my doctor gave me a 21-day progesterone test, which is a one-off blood test on CD 21which checks your progesterone levels supposedly after you ovulate. It was useful for me to know that at least one part of my ovulatory cycle is supposedly on time. I was told that the odd irregular period may be down to being on BCP for a long time.
I hope your cycles return to normal next round. I've read a lot of threads on here about the odd one long cycle and it does seem quite common so FX's for you. Hope you get your BFP soon.
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