Birth control pills and plan B

Melissa

So I recently starting taking birth control 2 1/2 weeks ago. Last night I had unprotected sex. He didn’t finish inside but he does have pre cum and we had sex again afterwards. I know this TMI, but I am concerned and was considering taking a plan B as a precaution. I know now that I will be using condoms as a secondary form of protection. Has anyone else taken plan b while on birth control?