How far apart are your babies

I gave birth to my son January 8th 2021 a week after being discharged (January 11th) my husband and I had sex (protected). My postpartum bleeding stopped 6days after birth well on February 8th I thought I started my period but 2 days later it stopped the bleeding was almost like it was when I had my implementation bleeding. Could it just have been more postpartum discharge or could i possibly be pregnant??

How far apart in age are your babies I feel like such a crappy person if im pregnant.