losing placenta on day 2?!?!

♡ 𝓚𝓪𝓽𝓻𝓲𝓷𝓪 𝓵𝓸𝓾𝓲𝓼𝓮 ♡
I gave birth on Friday 13th at 11:12pm.
Today at 00:12 I felt a gush of fluid and went to change my pad thinking it was urine or blood but instead is a long thick brown piece of tissue with blood attached to it there in my pad
What could this be?