not meeting my grade and exam in a week…

so i did the very last physics past paper for p1 today so no more and got a b, yes that’s good but i need an a in physics to meet my offer, usually i get that but this is lit the last full paper i can do before my actual exam and it’s rlly scared me, i dont wanna miss my offer to lse because of this goddamn subject i hate :/

what do i do