When should I test? TTC after miscarriage

On Halloween I had a miscarriage at 9weeks and 6 days. Got my period on Dec9. Lasted 8 days stopped for a day and then lasted another 6/7days. Since then I've been having mild cramps like when I first got pregnant.

First pregnancy I tested the day I was to get my period and got a positive.

So was wondering when should I test and when will it be more accurate since I was on my period for about two weeks after a month of the miscarriage. Thanks xoxox