AF after MC

ttc#3
Hi guys so here's my story I MC at 7weeks at the end of August my cycle was always between 23-26 days now on CD 28 and still no sign of AF. MC took 4days and scan and bloods on the 4/9 showed hcg 6 and uterus all back to normal. Did it take you longer to get your period after a MC. I've taken a hcg test and its a very clear negative I know I ovulated this month as track cm bbt and use opks. Here is a pic of my chart.
Just looking for some help as to what is going on and is AF usually late after a MC.