Do I need a plan b?

So yesterday was the start of my new pill pack. Instead of starting it, in the morning i inserted a nuvaring, at night I got curious and looked at the packaging as it was just a sample my doctor gave me back in November. It said it could only be stored for up to 4 months. I got nervous and took it out at 11:30 and quickly took my birth control pill that I had from a new pack I got. I had sex today with my boyfriend but he used a condom and pulled out before he finished. We had sex twice and used a condom both times from start to finish. I am also on day 4 of my withdrawal bleed. I am concerned because when we went for the second round I was rubbing him to get him hard and then I was rubbing my clit. I don’t remember if I had precum on my fingers but I’m nervous that I did and ill get pregnanct since i started my pill pack 8 hours later than normal. Should I take a plan b? (This is my 7th month on it and I’m on the combination pill) please no hate I just need advice.