Ovulating after baby?

Nakita • 30 years old, Married Baby 1- June 2015, Baby 2- October 2016, Baby 3- March 2018! Baby 4 October 2019

I'm 6 months postpartum and haven't had my period yet. It was very irregular before hand but I still ovulated(did many tests with the Dr). I've been using OPKs and have yet to have a positive. I have been EBF my dd and have now started to wean only at night to see if I can get my period to maybe return. I took the tests only to see if I was actually ovulating.

We aren't trying hard to have another baby. We just aren't preventing it. If it happens it happens! I feel a lot less stressed out this time around. Are any of you ladies experiencing this or something similar to my situation?