TMI pic - Birth control?? Just help plz

Hey ladies, so I started taking birth control because I wanted to regulate my cycle so that eventually I could start trying to have a baby . but it started making me feel weird instantly so I took it for about a week and then I just quit and it’s been two days and now I’m having this come out of me it’s a weird texture And I don’t have a steady flow of blood just pieces. Has anyone experienced this? Is it due to the birth control, is it yeast like I have no clue what’s going on?