In 2017 it is absolutely obnoxious that medical science doesn't understand PMS/PMDD

I am so miserable today and was curious about the science of it but there is no science. WebMD admits this while "women's publications" sound downright misogynistic with their suggestions of "Nothing's wrong, it's all in your head. You should exercise more and drink more water." Fuck you, I'm a pro bicyclist. I get plenty of exercise and water and still lose strength and feel terrible! We understand erectile dysfunction and male pattern baldness but not PMS in 2017. 😡