I had sex 5 days ago and he finished inside me, I took a plan b the next morning. Today I had this weird cramping kind of like right under my ribs/on top of my diaphragm. I didn’t even realize until today that when I had sex it was my fertile window and I know plan b sometimes doesn’t work if you take it when you’re already ovulating. Does anyone know if cramping is a very early sign of pregnancy or is it the plan b?