My great aunt on my mother's side is the only identified family member having had breast cancer, but as we have quite fibrous breasts, the regularly scheduled check-ups started early for my sister and I.
I admit, I'm lucky because the squish and squash doesn't bother me much, and after having two children, I'm not squeamish about baring the girls when necessary. I know there are those that are uncomfortable, and hey, that's okay. Just don't let a few minutes of discomfort stop you from taking care of yourself.
You are important. Always.
The fact that I live in a smaller town and the same, familiar, amazing nurses have been doing the procedure since I started helps a lot, too.