I want to wish you the best in your recovery from Thyroid Cancer, please take care of yourself, my heart goes out to you!
Recovery from a laparascopic gallbladder surgery varies from person to person. My guess is your DH had pain meds from the anesthesia left in him on Sunday, that's probably why he felt pretty good. When that wears off, many are left with the gas pains in the shoulder, plus the soreness near the incisions. Getting up and walking around is the only way I know of to get rid of the gas pains! That and drinking lots of water and eating low fat. He won't want to hear this but the best thing is to get off the pain meds as soon as possible, they can and do cause constipation. My surgeon said to take a stool softener for every Vicodin I took. I was off pain meds after a day and a half. I felt tenderness around my midsection for about 2 weeks, I could hardly button my pants, to tell you the truth! I had to eat low fat for a number of months, this gives your system a chance to adjust to not having a gallbladder to store the bile excreted by the liver. Yeah, beef jerky isn't the best choice for someone in his position, but I understand you can take a horse to water but you can't make him drink it LOL!
Good luck to the both of you, please let us know how you're doing!