How long?

How long after a MC does it take for AF to show? I have had off and on spotting starting November 8th. I thought AF started December 18th but it wasn't and I haven't had anymore bleeding since.

It depends how far along you were. I had a miscarriage at about 5.5 weeks, a week to a week and a half of bleeding during the miscarriage and my period returned around when it was due if I hadn't been pregnant. I also had a premature delivery of my son at 23 weeks and the bleeding lasted 9 weeks.. kind of like regular pp bleeding.

I've had 3 miscarriages and AF always returned within a month.

I have had three miscarriages (two early one missed miscarriage D&C) Af showed up with in 30 or so days my last miscarriage was around 7 weeks and AF showed up 28 days later.
Hope this helps.

Yes it did! Thanks ladies I am going to pick up a test at the store and take it.