I got my AF back at 8-9 weeks PP & then was perfectly regular from then on after both of my 1st babies. Baby #1 got boob and bottles, Baby #2 was totally EBF. I was so shocked & bummed about that!
But then with Baby #3, there was no sign of AF til 7mos PP, then she was quite irregular all the way to my next pregnancy.
I'd still be breaking out the condoms if I were you!