Why would both of my calves and feet hurt?At night in bed, or when its cold.Would a blood clot be unusual? Also non painful muscle twitches on knee.
Hard to say
Your symptoms are nonspecific.
Restless-leg syndrome consists of: 1) discomfort, pain, tinglies etc in feet, legs, +/- arms at night or worse at night 2) urge to move the limbs, not involuntary but irresistible urge to move 3) inactivity brings it on 4) movement relieves the symptoms at least temporarily. If you have those symptoms, you have rls. It is treatable.