had unprotected sex with my bf on september 1. he did cum inside me and did not use a condom obviously, i’m not on birth control. but about a week after we did it i noticed pink/brown discharge and only lasted a day it wasn’t my period because i had it a week before i did it with him. my period was due about now and i did notice the brown/pink discharge again but it’s not like my period usually is, usually it’s heavy and the blood is bright red like my period of course. it’s different this time and i don’t have cramps either. i’m a little worried and my doctor isn’t open on sunday’s so i’ll have to wait to go tomorrow. does anyone know what this could possibly be?