Started Getting Swelling Of Hands And Lower Legs And Feet

Started getting swelling of hands and lower legs and feet last night. In the middle of the night I developed a pounding headache, throbbing to the beat of my heart. Finally went away after 6 hours or so when I took some lortab. Next morning the swelling in hands and feet and shins was much worse. Then headache returned. Very stiff and sore all over. I have fibromyalgia. This swelling thing has happened once or twice before.