Late period

SB

I thought I posted about it but apparently I didn’t. (Anonymously)

I had my son Aug 26th. He was called home early. Ended up getting my first cycle on the 4th lasted 9 days. Now it looks like I’m 7 days late. Is it normal for your cycle to become wacky after giving birth?? Haven’t taken a test bc I took one on the 25th just to see bc I had a feeling I was but it was a BFN.