I have used it lorelei - not for TTC but for coping with PMT. Because I chart my cycle, though, I noticed in the first month I used I that my luteal phase lengthened by 2 days. However I had side effects of slight nausea and tiredness which of course made me think I was pg! Use it with care I would say, maybe even trying half the dose recommended on the jar to start off with till you see what it does to you. Lots of women in the global TTC community swear by it - most knowledgable are on USA website called www.tcoyf.com - look it up on their talk boards under "Everything Herbal"