This is called peri-umbilical pain. With out an exam and detailed history diagnosis is difficult. In that general area is mostly small intestine. I'd see your doctor.
What Causes Pain Right Beside The Naval On Your Belly?
Could be a hernia or appendicitis
Can also be pregnancy...I went to my doc with the same prob and she said hmmm could you be pregnant and I thought no... A week later I missed my period did a test and ....:)