This research article talks about vitamin D deficiency to problems getting pregnant! (It affects "ovarian follicular development and luteinization via altering anti-mullerian hormone signaling, follicle- stimulating hormone sensitivity and progesterone production in human granuloma cells") Which vitamin D deficiency is common with people who have PCOS with 67-85 percent of those with pcos who have it! Vitamin D2 can only be obtained through a prescription!

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4669857/