I loved reading your story! I had my surgery on the 9th of April (3 days ago).
Had a pretty good headache once I started on my preop 3-day liquid, no sugar, no caffiene eating plan and it has not subsided since.
I do get pain in my chest/upper stomach when I drink anything, most painful with meds.
They have me on the same sugar free, liquid diet until the 16th, so I am getting tired of Jello and broth and not confident that I am getting all my liquids in.
I love hearing great successes, I know it will take a short time to start feeling better and get going again.