How long does a pregnancy test show positive after giving birth?

If I gave birth to my daughter on August 24th and I take a pregnancy test today or tomorrow morning would it still show positive? Typically how long does it take to get all the pregnancy hormones out of your system? Im not breast feeding and havent been bleeding since my second week post partum. Thanks in advance for your answers.

How long does the pregnancy hormone last in a woman after giving birth?

I gave birth in August and just yesterday I took a home pregnancy test and it came back positive. Is it picking up my last pregnancy?