My pain were on my diaphragm only. Like having a wind/gas stuck just below your sternum. Like when you drink Coke to fast and you can't get a burp out It was not in my ribs. And I was nauseous and lost my appiteit.

If I were you, I'll let the GP check your urine, just to be on the safe side They can see imediatly in the urine, after that they do a blood test to see how far it has progresses.

HTH