took longer than 7 day break! could I get pregnant??

I have been taking 21 pack of mircogestin since June. I took my last pill of my 21 pack last Friday at 6:00 pm like I usually do and got my period last Saturday night. I was supposed to start my new pack after 7 days so that would be this Friday. unfortunately due to problems with my insurance I still have not started my new pack and had unprotected sex on Friday and tonight. I plan on starting my new pack tomorrow at 6:00 pm like I always do. am I still protected? should I take plan b or just start my new pack tomorrow like nothing? please help! I am so worried!