I’m 57 and two of my father’s sisters had breast cancer. I recently had my annual mammogram. Received a call the next day to schedule an ultrasound which I had yesterday. They could not find the spot that was in two different views of my mammogram during the ultrasound. The tech came back with the radiologist and he watched her repeat the scan then he performed a scan. Still nothing was found. He recommended doing another mammogram in 4 months. Does this sound reasonable?