I've experienced varied and mostly short LPs all 8 years i've charted and finally went to see a specialist. my blood tests for Prolactin and Thyroid showed i was within the normal range on both, so the next possibility is this syndrome i've never heard of. I was reading about it in Taking Charge of Your Fertility, but wondering if anyone else has had experience with it. My specialist is going to prescribe Clomid if this LP is under 12 days. I'm nervous about meds, but also am tired of ttc if it's never going to happen without them. i know soy is an alternative, but it was too late in my cycle to take them when the specialist told me the recs for next cycle. anyway, any knowledge/advice/btdt stories would be helpful! 
a little more info... i went in for the suspected luteal phase defect based on LPs ranging from 7 days to 15 days (they aren't supposed to vary more than 1 day on either side of 'normal' for each woman), brown bleeding after most all AFs (indicative of poor quality LP the last cycle) and slow-to-rise temps (also possibly indicative of LPD). my specialist thinks this LUFS may be the cause of the LPD. apparently later than 'normal' ovulation and long cycles can also be a symptom of LUFS. i never would have guessed a problem with ovulation, since i've always had biphasic charts, but that's what happens with LUFS apparently... your progesterone rises and accounts for the high temps, while the luteinizing hormone never kicks the egg out.
a little more info... i went in for the suspected luteal phase defect based on LPs ranging from 7 days to 15 days (they aren't supposed to vary more than 1 day on either side of 'normal' for each woman), brown bleeding after most all AFs (indicative of poor quality LP the last cycle) and slow-to-rise temps (also possibly indicative of LPD). my specialist thinks this LUFS may be the cause of the LPD. apparently later than 'normal' ovulation and long cycles can also be a symptom of LUFS. i never would have guessed a problem with ovulation, since i've always had biphasic charts, but that's what happens with LUFS apparently... your progesterone rises and accounts for the high temps, while the luteinizing hormone never kicks the egg out.
