I’m terrified

I lost my virginity abt a week ago. We used a condom but not the whole time so i took a plan b. But now my period is late. I bled a little earlier today, but it was nothing like my normal period. I looked it up on google and it looked exactly like implantation bleeding. I’m so scared that I might actually be pregnant. And I don’t know what I’m gonna do if I am. I definitely can’t have a baby rn. I’m just abt to enter college this fall. I can’t even tell my mom abt this and I feel so alone :(