Pelvic pain

Hello, I have pain in my abdomen either side of my navel, not severe but a dull achey pain like I been kicked in the stomach. Been going on for months now. don't know if related but burp a lot as well.

​Have had colonoscopy, endoscopy both normal, ultrasound as well fed up of feeling unwell.

For some years I have also had a dull pain that comes and goes to the right of my navel.. I never had it investigated as it went away each time.

I have exactly the same.. I have had - colonoscopy, ultrasound  but no endoscopy. Went to see my gyno yesterday and she has no explanation. She didn't think I needed an Endoscopy... mine is constant - everyday. It has been for the past month and I have so over it... how long has yours been for? and is it constant?  I am so frustrated its such a dull weird pain