Hello, my OB just prescribed 200mg progesterone vag supposit. 1x daily for short luteal phase...10 or 11 days; I am almost 40 and have been ttc for 9 months with 2 maybe 3 early miscarriages. We are not testing my levels, just supplementing to try and get the next one to stick. My question is, if I start taking them 3 days post ovulation, when do I stop? My cycle is normally very short - 22-24 days - so I can't figure it out since the prog. will/should lengthen my cycle. Do I wait until the normal cycle time (ie. 23 days from day 1 of cycle) then stop progesterone? Do I wait for a neg. HPT? Or does it take a couple of days for AF to come after stopping the progesterone? (i called my OB but her office is closed until tues. next week and i ovulated yesterday i think, so should start PG soon). Thanks for your help!