I had a mole cut out by a dermatologist a few months ago, now it itches and won't heal, is this normal? (Photos)

I had a biopsy done on said mole and it was revealed it was a harmless congenital mole. It is on my side, below my ribs. But it was very deep and had roots down past my dermis. It was removed several months ago, but now has a dark, brownish-black colored dot on one side of it and is very pink. It also constantly itches and sometimes burns. (Pictures)