Opk after miscarriage

AG

How accurate is an opk after a miscarriage?

Had a D&C on 6/24, and wondering when my cycle will normalize. If I have a positive opk now I should have a period in 2ish weeks (cycles normally VERY regular, 28 days)? Still have very weakly positive hpt.

Dr said to wait until I have a normal period before trying again, so just trying to predict when that’s going to happen.