Hello ZigZag

have you tried chinese herbs and acupuncture to lengthen your luteal phase? It seems to work for me...I used to ovulate on day 16/17 with a luteal phase around 9 or 10 days. After 2 months on TCM, my ovulation is back on day 14 and my last 2 LP have been 13 and 12 days.

Maybe you should give it a try?