I think progesterone would only work to lengthen a short LP if you short luteal phase was caused by progesterone deficiency.
I had short LP NOT caused my progesterone.
EPO is not progesterone, I've read that it helps makes more EWCM around ovulation but that it can also delay ovulation. The only time I've used EPO is at the end of pregnancy to help ripen the cervix.
Before I start taking hormones like progesterone, I might get my hormone level's check via a bloodtest. The progesterone in over the counter is mostly for menopause, not for sustaining a pregnancy, so if you did have + pregnancy test with a progesterone deficiency, you'd want a prescription anyways - and it'd be a good idea to get that planned out ahead of time.
You can also take b6 supplements, which is supposed to suppress prolaction levels and possibly increase LP. A lot of breastfeeding moms TTCing have short LP due to that, although you can have higher prolaction levels without nursing (it would be one of the hormones checked if you have a fertility panel run...)
Michelle, Mama to ~ F (10/06) ~ S (7/08) ~ H (2/11) ~ B (11/12)
Expecting a surprise (5/15)
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