Opinions?

Jada • Life's too short and so am I

I had sex with my boyfriend the 22nd where he came in me. Im on birth control and never take it later than 30 minutes past my scheduled time. Today was my last active pill so I should get my period in two days. I just used the bathroom and had creamy discharge that was tinted a little brown on my underwear but none when I wiped so I'm kind of worried whether it's my period or something else.. any opinion?