Anyone here who can feel that lying down feels extreamly heav for body. I mean the pressure from the bed, gravity... Sometime i feel i just have to sit up to relieve my body from the " bed-pressure". It like it gets to heavy for my body. It releases after have been sitting up for some time. Anyone??? (I had this for 3-4 years...gets worse... Sleeping elevated on many pillows helps..) Thankful for answers!