Period After C-Section

Ivy

So I Had An Emergency C-Section, I Gave Birth At 26 Weeks To Two Very Handsome Identical Twin Boys 💚 They Are Turning 7 Months On BLACK FRIDAY, I Just Got My First Period Since My Last Period Before I Found Out I Was Pregnant. . .Anyways I'm Cramping Really Bad, Like I've Never Felt This Pain Before In Any Of My Period Ever, The Blood Is Really Mucus-y And Kinda Heavy, Should I Be Concerned? Or Is This Normal For The First Post-Partum Period?