Why am I experiencing white stool and excessive thirst?

Upper right stomach pain could be due to inflammation of the gallbladder or liver.. Other causes include peptic ulcers or acid reflux. Appendicitis or kidney stones are also possible causes.. Schedule a visit with your doctor to determine the exact cause. 

You mentioned numerous problems that have tortured you in the last 2-3 months - like nausea, fullness after a meal, and heartburn. That can be a sign of anxiety. However, you say that they tend to become aggravated during high-pressure situations such as exams that may lead to that. Anxieties can lead to digestion problems and anticorrelated symptoms. Do some techniques like deep breathing or walking to reduce the stress level. Smaller and more frequent meals can also be of help to avoid your pain. 

Do not underestimate how black stool points to possible internal bleeding of your digestive system, nor your symptoms of losing weight and having no appetite. This points to the start of a severe health issue that would be more likely benign than malignant. Besides, it's best to go through the colon and intestine diagnostics first as well as some other medical tests.

Gut issues can be challenging. You've successfully healed ulcers, which is great, but IBS challenges remain. IBS is common and can cause belly pain, bloating, and changes in bowel habits. Often, stress or certain foods trigger it. Medications like Librax and Amixide H, prescribed by your gastroenterologist, can help manage the symptoms. However, lifestyle changes are also important. Stress relief methods, regular exercise, and a fiber-rich, healthy diet can make a significant difference. 

Some individuals fe­el uncomfortable drinking cool liquids. For them, inge­sting cold water or beverage­s at room temperature trigge­rs reactions. These can include­ indigestion, chilled sensations in the­ body, stiffness, and headaches. Such e­ffects may stem from sensitive­ nerves or issues with the­ digestive system. If you face­ similar challenges, consider sipping warm wate­r or teas to stay hydrated. Simultaneously, maintain a balance­d diet to ensure ade­quate fluid and nutrient intake.

Your girlfriend might be experiencing acute appendicitis. Symptoms of this are sudden stomach pain on the lower right side with swelling. Appendicitis is when the appendix gets inflamed. If you think this is the case, you need to go to the hospital straight away because surgery is usually the only way to get rid of the inflamed appendix and avoid complications.