In the first few weeks after gastric sleeve surgery, it can be genuinely hard to know what is a normal part of recovery and what might be a sign that something needs attention. Discomfort, tiredness, and unpredictable digestion are all expected. But some symptoms should not be dismissed. Here is a practical guide to telling the difference.
What Is Normal in the Early Weeks
Some degree of pain and soreness around the surgical sites is expected, particularly in the first week. Fatigue is very common and can last longer than people anticipate. Feeling emotional or low in the early post-op period is also normal. The combination of anaesthesia, physical recovery, and the sudden change to your eating is a lot for your body and mind to process.
Nausea, especially in the first few days, is common. Struggling to tolerate fluids comfortably at first is common. Gas and bloating as your digestive system adjusts are common. A certain amount of shoulder tip pain from the gas used in laparoscopic surgery is common and usually resolves within a few days.
You will also likely notice changes in how quickly you feel full, which foods you can tolerate, and how your digestion behaves more broadly. This settles over weeks and months as your body adapts.
Warning Signs That Need Attention
A high or persistent fever is not normal. Any temperature above 38 degrees Celsius that does not resolve quickly should be reported to your surgical team. Fever is the body’s signal that something is wrong, and after bariatric surgery it can indicate infection, a leak, or another complication.
Increasing rather than improving pain is a red flag. The trajectory of your pain should be generally downward after the first day or two. Pain that is getting worse, or that suddenly worsens after a period of improvement, warrants a call to your team.
A heart rate that feels consistently rapid or pounding, even when you are resting, is something to flag. Tachycardia can be an early indicator of a leak or internal bleeding before other symptoms become obvious.
Vomiting that prevents you from keeping any fluids down is concerning because dehydration is a serious risk after bariatric surgery. If you cannot keep even small sips of water down over several hours, seek help.
Redness, warmth, swelling, or discharge from any of your wound sites could indicate infection and should be seen by a clinician.
Any chest pain or difficulty breathing should prompt a call to 999 or an immediate visit to A&E.
The Rule We Follow
If something feels wrong, it is worth checking. The downside of making a call to your surgical team when everything turns out to be fine is very small. The downside of waiting when something genuinely is wrong can be serious. After everything you have been through to get to surgery, protecting your recovery matters.
Most people come through the early weeks without significant complications. But knowing what to look out for means you can act quickly if you need to, and that is always the right thing to do.
We are not medical professionals. Everything we share is based on our own personal experience. Please speak to your bariatric team or GP before making any decisions about your health.
About this content
This blog is written by James and Kirsten, a couple from the UK who had gastric sleeve surgery together in March 2024.
We started this blog because we couldn't find any sources of content that details before surgery, the surgery and then life post surgery - so we decided to write one ourselves.
Everything on this site is based on our own experience and the research we have done along the way. It is not medical advice. Gastric sleeve surgery is a serious procedure and every patient's journey is different. Please always consult your own bariatric team or GP before making any decisions about your health or treatment.
Some posts on this site may contain featured or sponsored content, or affiliate links. Where this is the case, it will always be clearly stated at the top of the article. Our opinions are always our own.
Publish Date: 10 July 2026 | Last Reviewed: 10 July 2026 | Next Planned Review: 10 January 2028