Does anyone know if acupuncture can delay AF?

I am 19 DPO (CD 39) and am still getting BFN. My cycles are usually 35 days (39 day once last year) but my LP has been a pretty consistent 14/15 days. I've been seeing a fertility acupuncturist for about a month. The acupuncturist that saw me last said that treatments shouldn't affect AF. I track CM, use OPK and a fertility monitor, and track everything on Fertility Friend (I know, a bit obsessive) so am pretty sure I O'd around day 20. I'm so frustrated! I wish I knew one way or another already.