Egg Retrieval and D&C- confusion?!

Abi

Today I had my egg retrieval and they got 12 eggs 🥚😬🙏🏻

They did a D&C whilst they were there. Doctor said this would be good to help implantation in preparation for a FET.

Anyone had experience of this? If so did it help?

I though D&C was done after a m/c?