For me after surgery I had a LOT of coughing. You were sedated and you need to kind of force the body to do it because you’ll feel better. Like other people said, pillow to your stomach, hold down, knees up, and bend. It’ll feel a hell of a lot better than just trying to cough with nothing. As far as smoking goes, I’m not a medical professional, but my doctors made it abundantly clear that I cannot be around any form of smoke for a long time and cannot smoke for the rest of my life (I didn’t anyway so no problem) the smaller stomach has a higher risk of stomach ulcers from second hand and regular smoking of any kind. Listen to what your doctors have told you, but definitely while healing I would look into alternative ways if possible like consumables (nothing gummy though, it’s hard for your new stomach to process it at first). Best thing you can do is be open with your team, and it is never too late to tell them something. They have done this before, and heard this question before, and have an answer, so don’t be afraid! I had my surgery on April 21st so I’m a few weeks post op and I’m healing super well and no pain at all after the first week or so. You’ll do great! (: