Now it hurts to stand up there is so much pressure.
It might just be your bloody show. It's part of the mucus plug. But if you're cramping also, I'd go to l&d cause it might be the start of labor. And better safe than sorry.
I'm not quite sure but my Dr said if I see blood than I need to go to L&D so if I was you I would call Dr or go to L&D just incase.