Leg pain on surface

I experience leg pain such that contact of clothing and or covers in bed cause pain to my legs. At bedtime I am uncomfortable but not in alot of leg pain. The sensation is best described as burning.  After an hour of sleep I awake with alot of leg pain from the groin to knees and most prominent in the front (quad) areas. Turning, the pain is imediatly relieved for another hour. Whatever part of my legs are making contact with the bed hurts. Half way through the night this amplifies to where just my clothing hurts the skin. There are no rashes, no tingleing. Neither heat or cold packs help. I have to stand up to get relief. I have had an Arterial Doppler test, four EMG's and all showed normal. I don't know if I am bringing this on myself in the foods I eat or there is a chemical imbalance.  Blood tests are normal for all muscle enzymes. I don't have a life because of this problem which has persisted for four years and is getting worse. I would appreciate any comments by people that have experiened similar and what works. I know what does't work.