Period?

Just curious for opinions 11 days ago had some spotting only did two times when id wipe stopped that night. The next day it was very light pink once then went to a brownish then stopped well today had a bit of brown twice but only a little then again stopped. I am a little over 2 months postpartum now have had unprotected sex since last week of august. Wondering if other mommys have had this? never had it after my son all my periods have always started out very heavy. And i am not breastfeeding