do not take antibiotics if doc is saying they are just in case. take them only if you have confirmed case of severe bacterial infection such as cholera and the like. also, do not take them in case of H.pylori.
i just had my gum graft surgery done, there was a lot of cutting and stitching and as usual i was prescribed antibiotics. i did not take them and mentally told myself that my immune system will take care of the wounds. when the swelling subsided i was ok without taking any antibiotics.