Irregular period after miscarriage

Hey, ladies. I had a miscarriage at 6wks June 23rd. I got my period a exactly 1 month later, it was it's normal flow and it lasted the usual 5 days. Well, my period was due yesterday and I still haven't gotten my period. I've also taken pregnancy tests and all have come back negative. Is it normal to have irregular periods after miscarriage?

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