unprotected sex then took my pill late

I had unprotected sex right before I was suppose to take my pill (sex around 8 o'clock but I usually take my pill at 830am) he didn't cum inside me and I took my pill 7 hours after I usually take it(345ishPM). Should I be worried or stay calm? 
P.s. I'm on my 2nd week into the pack and this is my first time taking birth control pills. I haven't been late or missed for/any other pill.