I Don't Believe Doctors Have All the Answers

I'm getting my results for my breast and now another doctor wants to schedule another appointment. When will this end?! I never had to go in that much as a kid...well maybe. I'm so sick of these doctors appointments and tests! Ugh! Do adults go to doctors more than kids? I'm not going to another doctor. I'm young... I'm not supposed to be going to the the doctor so much. I'm 22! Not 70 no offense.
Why do I need to go back to the doctors?