Completely normal! I hope that you recover well and take it easy please I had the same birth with my first. If you lay down the blood gathers and then comes out as a thick clot. I was told anything bigger than a £.50 piece I have to call them. I called them and they said it was nothing to worry about as it was completely normal due to the amount of blood transfusions I had and also laying down to recover x mine was the size of my palm
Probably is normal to be fair (I had a c section so can't say I have experience). I'd probably take a photo and show the midwife just in case.
I would get in contact today with it being so large. I was told anything larger than a golf ball when I had my daughter x