missed a day and spotting?

I spent the night at my boyfriends house Tuesday night to Wednesday morning. normally I'd bring my bc pill to take early in the morning. I forgot it and only took it around 6pm. thursday and Friday I have taken the pill at my usual time. I've gotten super emotional and my discharge now is like shit brown. not like old blood brown. and my period is "due " in ten days even though tomorrow is the last pill of my second package.