I have just found out i have gallstones. 2.8 - 5.4mm is there a treatment for this? or is the only option surgery?

Yes: Surgery is the only option. The endoscopic approach is used for more than 90% of cholecystectomies today. Many are done as outpatient or overnight stay. Doing it electively lets you schedule it at a convenient time for your schedule. Good luck.

Surgery: At your age eventually you will have problems. Every patient has to be considered individually.