hun I had an 11pound boy, 55cm long, 39cm head.
I had tearing, and lots of blood loss, but it wasn't so bad. I would say my first who was 8lbs 4oz, 53cm and 37cm head was worse!
I didn't put any weight one, only 6kg which when I took the 5kg baby out plus placenta and fluid, was nothing. He was still very big, no reason for it, just big. My 2nd was 9lbs 5oz so it was a big jump to 11.
You will be fine