Help !!

Hey ladies ! Okay so long story short, I had sex about 11 days ago with a guy that I’ve been “dating” since the fall. I was supposed to get my period today. And I truly believe I did. HOWEVER .. it was very light when it started earlier today & there was barely any blood on the 2 tampons I used. And when I used the bathroom there was absolutely no blood on the tissue except for the first time I used the bathroom. Could this be implantation bleeding ?! I’m nervous because we’re not trying to make a baby. And yes I know, “if I wasn’t trying to get pregnant we should’ve used protection”. That’s beside the point 😂. It was light pink & mucus like when I originally noticed it. And when I took out the 2nd tampon there was just a tiny bit of brown blood.