I’m not sure how your insurance works, but going to your primary care physician before the six months are up may be a way of reassuring you that nothing untoward is happening. My husband used to go to his PCP every month or so even while he was in treatment. His PCP helped him with all kind of stuff (like sleep apnea, granulation at the feeding tube insertion site, skin changes after chem, etc.) that the oncologists simply did not tackle. The PCP is also the one who can advise you to go back to your oncologist if it’s necessary.