Last Night I Had Chills And Leg Pains. Did Some

Last night I had chills and leg pains. Did some massage and relaxation yoga and took a hot bath. Slept poorly with leg cramps. Got up this morning with legs weak and crampy. While eating breakfast, I got a severe wave a nausea and tried to get to the bathroom but I couldn't walk. I staggered sideways and had to sit down on an end table. Then I laid on the couch for a while and finally got to the bathroom. I went back to bed and slept till 2 in the afternoon. I feel better but I still feel tired and I have a headache. This has happened before but no this severe. Just weakness in the legs and dizziness but I could still walk.