What Causes Cramping In Calf And Feeling Of Spasms In Brain?

hi, i have had a 8 year history of different types of muscle jerks, spasms, etc. whats worrying me is my EEG turned out ok, but 2 nights ago i woke up screaming from a cramp in calf, and its still cramped. Also, it feels like my brain is spasming, ive had 8-10 of these feelings in the lats 12 hours, its on the right side of the head and I feel it over a huge space. should I be worried?