Post-op questions....

I had my surgery on 03 April and have been home from the hospital since 12 April. I am still very tired (could this be from the pneumonia?) and have very little energy. I am having a hard time eating anything at all. Nothing tastes good and my stomache always feels icky. I am so sick of water that it makes me gag every time I take a drink. I have lost a total of 34 pounds since I left the hospital, but I was told by the doctor I was loosing too fast. I guess I am just struggling and looking for advice. TIA Monica