Severe pms symptoms

I had unusually bad pms symptoms after moving to the US 2 years ago. Little did I realize, I started eating too much sugar and fast food here. Every time 2 weeks before my period I was very depressed. The first 2 days of period were accompanied with painful (unbearable) cramps and diarrhoea. I had to take about 4 pills of ibuprofen sometimes. After just 2 weeks of clean keto and 18:6 fasting regime I had a pain free, depression free period for the first time in 5 years! I was amazed that was actually possible!! I am 25 years old, fit and active. Very thankful that I can enjoy my youth peacefully.