Is Cholecystectomy Advisable For Mobile And Non Obstructive Gall Stones?

I have 2 9mm gallstones, mobile and non-obstructive. The gallbadder is optimally distended and wall thickness appears normal. No pericholecystic collection or murphy sign. Cbd measures 4cm. I had an ultrasound after reporting pain below right shoulderblade. It felt as if i had pulled a muscle. Pain lasted 3/4 days and disappeared. Should I have gallbladder removed.