Someone please help ๐Ÿ’•๐Ÿ™๐Ÿผ

li

I had sex last night and since then I have been bleeding light pink/ light red/ light orange? Also Iโ€™m cramping? What could this be? I donโ€™t think I am pregnant because before this I had sex on the 30th (same day period ended) and I took a plan b a day and a half later. What could the bleeding or whatever be after sex?