TTC AFTER MISCARRIAGE AND D&C

I found out I would have a miscarriage on Tuesday so I opted for a D&C due to not mentally being able to handle everything at home with medication. Iykyk. When did you start trying to conceive after that? I know doctors say wait two weeks but I know of people that have had this done a d their HCG never went down because they got pregnant right away? Did you wait the full two weeks or no? I need advice please