I Have Had Sheehan's Syndrome For 14 Years, Treated With

I have had Sheehan's syndrome for 14 years, treated with synthroid and cortisone. About a month ago I started having muscle spasms in my legs, now my legs, feet, gips, back and hands are spasming painfully many times daily and throughout the night. Could it be because of the Sheehan's, I'm otherwise healthy