How long did it take after a D&C for AF?

Elizabeth
Had a missed miscarriage at 9 weeks and a D&C 5/1. It's been almost 7 weeks and it's driving me crazy. My doctor saw me at 3 weeks after and said she thought it would come in 2-3 so I started taking pregnancy tests last Tues and kept getting super faint lines. Still no bfp on digital so I'm sure I'm not pregnant. Dr said to call if af doesn't show up after 8 weeks. Anyone else deal with this? How long was it for you?