Girls, hello. Maybe someone can tell me... I'm not breastfeeding my ba…

Girls, hello. Maybe someone can tell me... I'm not breastfeeding my baby anymore for over two days. But I'm not even expressing anything, because it doesn't really help, and my breasts aren't filling up completely. I won't get anything if there's still milk in there, but it's not flowing anymore. Should I express? I want to take pills to stop breastfeeding, but I have an ultrasound and examination only tomorrow.