When did you get your first postpartum period? Possibly pregnant?

I'm currently 6w2d postpartum and wondering when I should be expecting my period. I bled all the way up to about 4 weeks postpartum and I only put baby to breast 2 to 3 times a day because I'm not really producing so its mostly comfort nursing and not feeding.

Anyways, I ask mostly because my SO and I have been having sex since 3 weeks pp (I know i wasnt supposed to and not looking for a lecture about the dangers of infections) and we have only been using the pullout method and I'm wondering if I should be concerned about missing a period and possibility of being pregnant.