The New Normal?

Marjorie • "Just staying on it I guess, long as she can."
Hi Mamas! I'm almost 13 weeks PP and I'm still learning about my PP body and how it now works. I have been BF since Day 1, we do supplement with formula but I rarely go more than 3 hours without BF. I had a period 5 weeks PP, then another one 7 weeks PP. I've been taking Norethindrone BC (POP, mini-pill, no estrogen) since about week 7 PP. I haven't had a period since week 7. Took a pregnancy test, came back negative. Is this normal? Could the delayed period be from BF or is my body still getting back to normal? Pre-pregnancy I was very regular on a 30 day cycle.