Bethany, why don't you talk to your prescriber about your symptoms? Like someone said, just being aware of what it is, is half the battle, and it sounds like you are. There are all kinds of nutritional and natural things for pms, but what you are describing (the rage) could be pmdd, or hormonal things that could be exacerbating your bipolar disease. I know some people think pmdd is not a real thing, but unless you have experienced the type of rage/mood swings associated with it, I don't think you should judge. There are a couple of anti-depressants prescribed (in low doses) for pmdd, but you really need to talk to your prescriber about this. I had severe physical pms symptoms, and only a little of the emotional ones. But, it did feel like my life was wrecked for a whole week of the month.
I am concerned that after 12 years, you still feel the loss of not being able to have more kids.