Missed birth control?

So i've been on the pill for a few months now and my period isn't due for another 2 weeks but yesterday I noticed I was spotting and was confused. I take my birth control the same time every BUT as I took my dose for the day I realized I missed Sunday!! I took both pills right now but what should I do? My boyfriend and I had sex on Monday :/ I'm signed up for pill club which is a birth control subscription so I get plan b for free also. Should I just take one of those to be safe?
Missed birth control?
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