Young was pregnant when UPS told her she could not have a temporary assignment to avoid lifting heavy packages, as her doctor ordered.
Young recalls the sting of being told "basically to go home and come back when I was no longer pregnant."
She sued the package delivery company for discriminating against pregnant women. After she lost two rounds in lower courts, the Supreme Court will hear her case Wednesday.
Young says she's fighting for her two daughters and for other women who want to work and start a family.