dehydration

I've been so sick the last few days with a sever headache, non stop cramps in my legs, sever fatigue, tiredness. I felt horrible. Yesterday I pushed through all the pain and worked out after I was done I realized that maybe I had been dehydrated. I looked up the symptoms online and sure enough all the symptoms matched up. I had worked out for a week straight which was new for me and I was not adding the additional water that was needed. Plus I'm nursing so my body really needed the extra water. I have been drinking lots and I'm finally feeling better. How scary that by not getting enough water all these symptoms can happen. I'm drinking lots of water from now on.