Why do I have lower stomach pain?

It's possible that the wound from your radiotherapy treatment has not fully healed or that there may be other factors contributing to your symptoms. You should communicate openly with your doctor about your symptoms, concerns, and treatment history, as they will have the best understanding of your problems. 

There are several causes of mild chest pain and stomach bloating which may include acid reflux, gastritis or even heart attack. It is recommended to visit a gastroenterologist or cardiologist so that the underlying cause of symptoms can be identified. Do not disregard the signs, and seek medical help immediately.

Issues like gassy bloating and acidity can crop up afte­r operations. That's because of change­s with medicines, stress, or new e­ating habits. Smaller meals, staying hydrated, and skipping spicy or gre­asy food might help. However, if it doesn't improve, he­ may need to check in with his doctor.

As a medical expert, I would recommend you to make a gastroenterologist consult about your anal fissure scar issue. Over-the-counter creams may not work and could cause other problems. A gastroenterologist can prescribe appropriate treatment measures including topical medications or surgery if required.
 

Consuming food that has been out of reach for a certain amount of time might result in food intoxication. The symptoms of food poisoning may include aches, discomfort, cramps, nausea, and vomiting. If there is no evidence of these symptoms after you eat the food, it's likely that your body didn’t react. 

While low B12 levels can affect the body in many ways, they usually don’t impact bowel habits like this. It’s great that you’ve had some tests, and they’ve ruled out any inflammation in your stomach or colon. Your symptoms might be due to functional gastrointestinal disorders or hemorrhoids, which are quite common and generally not too serious. Keep an eye on your symptoms, and try not to worry too much. However, if you’re still concerned, getting a second opinion from another doctor might help give you peace of mind.

Yes, fatty liver grade 3 is quite serious, but it can still be reversible with proper diet and exercise. It's crucial to avoid alcohol, eat a balanced diet rich in fruits, vegetables, and whole grains, and engage in regular physical activity. Please consult a hepatologist for personalized advice and treatment options.