I know the 12h work shifts are tough very well. That was one reason why I left my old job. I can imagine how bad it is to go to a mammogram and to be unsure if everything is okay. And now in your case, you have to wait for the biopsy results again. I would say it's similar when men have problems with their prostate. I know a guy who told me a bit about how it was and that he got surgery later. That scared me a bit. I hope everything will be okay and the biopsy results will be harmless.
!BBH !HBIT