Hello. So as l was too panicked about it all, l made a mistake and was 2 days late to take my progesterone 200mgs. Would that me okay. l got confused and now am clear however instead of taking them on day 15 l took it on day 17. Should l worry and go for an ultrasound check ? Also my own natural periods were always been max 3 days long until l was diagnoised with POF and did not anymore have periods. However after being put on body identical hormones my first artificial period on them lasted for 2 day, similar to my old natural periods. Is it okay to have it this short or should l worry about any endometrium thickness ? Thank you.