I got a bfp

Nakita • 30 years old, Married Baby 1- June 2015, Baby 2- October 2016, Baby 3- March 2018! Baby 4 October 2019
Haven't been trying but haven't been preventing. My DD is 8 months old. Still don't know what to think. I mean I knew one day it would happen, just thought it would take longer because I am ebf my DD and I still haven't had a cycle