I recently heard that having a lot of soy in your diet may affect periods. It makes sense. Birth controls have hormones in them, and soy can add/affect/have estrogen in it. My question is: I suffer from SEVERE pms symptoms, otherwise classified as PMDD. I tried a birth control, and it affected me very negatively on an emotional/psychological level. I am on an antidepressant, and that helps, and I hope to get chaste berry. Has anyone heard how soy can affect this, for both the good and the bad? Also, does anyone know of any other vitamin supplements? my gyno keeps wanting me to try diff birth controls, but I think it's too risky.