Could I be pregnant

Hey,

I just start the birth control pill at the start of this month. I had unprotected sex for a minute then we put a condom on and then he came on my back. I havent missed any pills or taken any late and ive been taking them for 22 days so im protected. When he came on my back i think i felt the cum go down my butt and onto my vagina. But im not too sure.

Am i just overthinking?????