HCG count after Miscarriage

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How long did it take for your HCG count to go to less than 5 after your miscarriage? I lost my baby at 7 weeks and passed naturally. My doctor said i was healthy and she had no reason to be concerned, just one of those things, but told me I needed to wait until I had an HCG count below 5 to try again (she said I didn’t have to wait until my period 🤷‍♀️). For reference when I started miscarrying I was at 5,175 and then three days later 396. I have my next blood draw in 4 days.