Been diagnosed with lots of gall stones half cm long due to pain under ribs frequently in past 6 months will i need surgery?

You have symptoms: For the past 6 months , not going to disappear with out surgery, if you have no contraindication for surgery , speak to your surgeon and get it removed. If it is done electively is a low risk ambulatory surgery and no need to suffer.

Gallbladder disease: Non operative management of gallbladder disease is risky., with potential for infection, and pancreatitis. Surgical removal of gallbladder has low risk and offers a cure.