Hi, I have had upper abdominal pain mostly just above my belly button but also right around my sides and back for about 2-3 months plus soft light coloured stools that float and sometimes diarrea . It has gotten worse causing pain all day, but particularly bad at night. I then developed headaches, bad heartburn, sore throat and got very sick overnight vomiting. I had an ultrasound done and it picked up I had an enlarged spleen but all other organs fine. My doctor thinks I have a stomach ulcer and prescribed me Pantoprazole until the endoscope can be done. I am feeling way better in just two days of taking this medication. Does this mean he is correct in suspecting a stomach ulcer or is it possible to be stomach cancer?