Postpartum period question (no period)

Tree • 💙3-15-16❤3-22-18💙3-28-19

So I had my first period at 3 months pp and I haven't had one this month. I can't rem after having my son how my period was. And yes I know the risks of having sex and all that but my question is how is everyone else pp periods( reg or irregular) I'm thinking if I don't start this week I'm making an appt.