Dehydration can cause lots of bad stuff for us after surgery. It cause nausea.. vomitting.. headaches.. fatigue. Severe tiredness.. I have had same problem. Sugar free Popsicles are a God send. If you feel thirsty and hare have problems with fluids.. eat these.. you can it as many as you like. It surely has helped me. Smells even bother me. I also have been emotional... this is a hard journey.. and I never imagined it would be this hard.. lots of tears since my surgery 7 weeks ago... Feb 9th. Stay strong.. blessings to all of you. ☺