Hi, I m 59 years old, went to bed last night felt kinda dizzy, lite headed, took an aspirin and went to sleep. woke up at 2:00 a , still dizzy feeling, and started to have cramps in my calf muscle, right side. I was more pyhs., active than normal, could I have been dehydrated? I m also a male. Still same this morning, but not as bad. also started a higher dose of levothyroxin, about 3 weeks ago.