I Have Muscle Pain In My Legs (mostly Thighs, But

I have muscle pain in my legs (mostly thighs, but sometimes down to my fee) at night. I have to walk
straight-legged when I get up until the pain lessens, which happens after I walk around the house for
about 1/2 hour. I take the drug carvedilol for congestive heart failure, but my cardiologist say the drug
would not have this side effect.