I've had an aching pain for a few days now in my upper abdomen, which hurts to push down. i'm bloated, have nausea and diarrhoea. what is it?

Unknown: Abdominal pain can be difficult to figure out without an exam. If the pain is getting worse, you are running fevers, or associated with prolonged vomiting you need to see a doctor. http://www.everydayhealth.com/pain-management/whats-causing-your-stomach-pain.aspx

GI symptoms: Lots of possibilities. Please see your doctor and after it is diagnosed consider taking probiotics. Dr. Ohira is a good brand. Peace and good health. You MAY be sensitive to a food you ate. Your doc can test.