Girls, I gave birth at 36 weeks. Everything's fine, completely healthy…

Girls, I gave birth at 36 weeks. Everything's fine, completely healthy, but there's some kind of new growth on the back of my head. It looks like a big mole. It's slightly growing, but it seems to be stopping. I gave birth on Friday evening, so we'll only get checked today ? We barely survived the weekend. Maybe someone had something similar? Doctors say without tests it's unclear, for now just a vascular tangle behind the ear. ???? Has anyone experienced this?