Hey, Thank you so much for your question. Yes, the stomach can stretches but it is very difficult after the surgery its done. In case that happens the best way to manage it, is by visiting a nutritionist to guide you in a diet. You can also perform a gastric sleeve if is necessary and your doctor consider it as an option.Hope my answer helped you
Right after the surgery, your stomach is very narrow and swollen. Most patients can barely drink liquids for a while. As the swelling resolves and healing takes place, the stomach heals to the size originally created by your surgeon. As time goes by, continued eating, especially to the point of fullness, can contribute to enlargement of the sleeve. In most cases this is moderate, and weight loss does not suffer. There are some circumstances where enlargement of the sleeve is significant enough to cause weight loss failure or weight regain. I have commonly seen this in women who have become pregnant after their surgery. The hormones of pregnancy cause things to stretch out, including the stomach. Many sleeve patients find it difficult to get back to their pre-pregnancy weight after they deliver.When I see patients with weight regain after sleeve, I will evaluate them with upper GI x-rays and endoscopy, to see if the stomach is large enough to warrant re-sleeve. In some cases this is possible; in other cases the sleeve appears narrow enough that re-sleeve isn't feasible or warranted.