I like to think that I make medical decisions based on science.  However, science only advances when we try things that are new and unproven.  If the last few years has illustrated anything, it is that science is never settled.
This podcast is like that - you won't find this referenced anywhere, and it's likely that your Ob/Gyn or PCP will look at you (and me) like we're crazy for bringing this up.
There is anecdotal evidence that you can treat the symptoms of PMS with a generic medication that's on the WHO's list of "essential medications" and can be had for pennies.
Take a listen and decide for yourself!

Brain Swelling "study"
CSF Increase during menstrual cycle