First time

Okay I just had sex for the first time two days ago. And am scared. He finished on my stomach and my hands and I wiped away as much as I could with some tissues but then in the shower right after I scrubbed it off with a luffa. I then rinsed the luffa and then washed down there with it. Do you think the sperm could’ve still be on the luffa when I washed my down there? I’m like literally terrified should I take a plan b? I’m really scared.

(I am on birth control btw)