I missed a pill what do I do ??

So yesterday I had sex and my boyfriend came in me. I take my pill everyday between 9-10 pm. I really thought I took my pill last night but apparently I didn’t base on my pill packet. So I doubled up and took my pill for yesterday and today. Should I be worried? Other than last night I’ve been taking my pills every day and right on time. I’m on my 11th pill of the pack. Been on it for 2 years.

So since I basically haven’t taken my pill since Thursday night and it’s Saturday night, just took my Friday and Saturday pills, does that mean it’s been 48 hours late?

I’m kinda worried this is the first time this has happened. Do I need to take plan b? Since I literally had unprotected sex the day I missed the pill.