Breast Cancer Protocol Breast Cancer Or Cyst?... I Am Worried.?

Breast cancer or cyst?... I am worried.? - breast cancer protocol

I went to my first mammogram a little over a week ago and yesterday I received a call saying that I wanted to go back because they found something wrong, and I want to spend a mammogram for diagnostic ultrasound. Can anyone tell me, this is normal protocol, even if only a cyst? I do not know what it is, but I hope it is a cyst, wondering, because it was my first mammogram, if that's what they do every time a rule? If it worries me sick?