Postpartum period, HELP!!!

Hey ladies, so I’m 6 months pp and I had my first pp period 6 weeks after birth which was around August 3rd. I then had a second period 8 weeks postpartum which was about August 16th. Since then I’ve had periods start between the 12th-16th of the month. Now I’m 6 months postpartum and my period has not came yet.... my husband and I have unprotected sex but usually I can tell when I’m ovulating by what my discharge is doing. (Yes I know not very reliable but oh well) I’m almost positive I’m not pregnant again, but I haven ruled it out.

I have been a little stressed and hormonal lately so it could be late from that but I’m just curious if anybody else has had a similar situation where their periods are regular after having a baby and then become irregular

No hate please!!