Is it my period or just random spotting ?

I had unprotected sex on not the Saturday that just pasted but the week before and I took Plan B any that Wednesday following I had brown discharge and light spotting Thursday its was heavy bleeding and on Friday it was medium to light and was the last day of bleeding I know the pill normally makes a person bleed but do I input it in glow as my period or just spotting I now want to concieve and I want to know when I will ovulate but with that I don't know what to put in glow someone help me please