I did not wait for AF and started right after. I guess it depends on how you feel around O. I felt totally back to normal but some ladies don't feel well enough to bd for a few weeks after.
I had a lap on June 11 of this year and an IUI on July 9. We started right away. AF came two weeks after my lap too.
You can start TTCing straight away as far as I know. I cant comment on your cycles but for me I had slight bleeding a few days after the lap and AF came 14 days after my lap.