Is it not normal to have skin come out during your period?

It's not normal to pass tissue or skin during menstruation. The shedding of the uterine lining during the menstrual period produces the menstrual flow, which is made up of blood, tissue, and mucus. The passing of skin during menstruation is not a typical or expected occurrence. If this is happening to you, you should consult a doctor to understand the cause and receive proper medical guidance.