Bleeding after sex??

Erin • 30, married 11/24/18, baby boy born 4/30/19!!!

So I'm 9 weeks post partum from having a c section and everytime my husband and I have sex, I bleed. Usually just spotting, brown blood, but it lasts for 24 hours and sometimes even requires a pad so I don't spot on my underwear. Any other mama's experiencing this??