I found that consuming soy every day contributed to my PMDD. Too much phyto-estrogens, I guess, and not enough progesterone. When I dropped the soy, I felt 25% better. Birth control pills generally helped take the edge off of the PMDD symptoms. I also used progesterone cream. That helped a whole lot! Then I got the Mirena IUD. It releases a small amount of progesterone. A few months after I got the IUD, the PMDD went away entirely.

Anyone can get an IUD. It doesn't matter if you've never been pregnant before or given vaginal birth. It doesn't matter what age you are. It's totally reversible. If you want to get pregnant, you can get pregnant a couple of months after taking out the IUD. I can't say enough good things about IUDs. It literally saved my life.