Wtf? 5 months now and nothing

Payton • Hello, I'm Pay. I am here to track and learn about my female health. I had my first baby 4m. ago to Ms. Vicky Rose. :)
I had a baby in August, and bled for 2 weeks after. But I have not started my period since and she's 5 months old now. Is this normal? 
(Ps I'm not preggers, already checked)