I'm sorry for your loss. I haven't had a chemical pg but I think I've had just about everything else!

After my 2nd loss I O'd 21 days after my D&C and I've known other ladies who had a normal cycle and didn't miss a beat. In that same breath, I know many ladies who's cycles have been completely messed up.
So my long answer is...anything is possible.
ETA: I can't type today!