My AF was really regular (31 day cycles) for ages, then suddenly went all over the place. I was being tested for PCOS and endo but I took Vitex in the middle of all the testing etc. I wasn't taking anything else and yep it totally got me back on track. I conceived within two months.

It doesn't help you actually conceive, it simply helps to regulate your cycles to give you a greater chance of catching the egg Good Luck!