implantation our period ?? 🤔🤔

ok so i’ve been so worried about me possibly being pregnant, and i got what i believe is my period on the expected day (today). i’m still kind of worried and worried it could be implantation bleeding. it’s pretty thick, and like i’ve had some clots (ik tmi). but what’s the main differences between implantation and periods? is it my period ?? thank you :))