The ideal waiting time to try to conceive again should be until your HCG level drops to either zero or an undetectable level. The hormone count resettlement signifies that your uterine wall is normal and can welcome a newly fertilized egg.
However, it will help to get reassurance from your doctor. The recommendations might differ on factors like your medical history and the reasons for your miscarriage. Usually, your body reaches normal HCG levels after the miscarriage in 4 to 6 weeks, and then your period starts. If it does not fall back to normal levels in this duration, it might suggest that some HCG-producing tissue is still present in your uterine wall. Generally, a procedure called ‘D&C’ removes these leftover tissues.
If you have to go through the D&C procedure to complete the miscarriage, your doctor might recommend you wait for two or three menstrual cycles before trying to conceive again. It is because the D&C proc