High fsh and vitex?

HI, So I have been trying to conceive for 5 years.. I'm 31, other then my fsh being high... Nothing else seems to b wrong according to my docs. I have been to several specialists and they all come with the same answer... Donor eggs. I have had irregular cycles since I was 12 and I still get them... According to the docs, I can't go under any treatment because of that. So I have vitex a try 3 months ago and I got my period 2 times in a row for the past 2 months. I'm praying maybe it works in regulating my period and maybe getting pregnant