bleeding tmi

so bub is 9 weeks and I have been bleed on and off since he was born. So I got told i could bleed for 4 to 6 weeks. anyway I bleed for 2 weeks then stop so I waited till bub was 4 weeks to make sure I have ful. stop bleed to take the mini pill. So then I have start taking it. When bub was 5 weeks I started bleeding again but stop at 6 weeks. Went for my check up and told the doctor and she was fine as i have stop bleeding but couple days later I started again only for 4 days I then stop. So when bub was 8 weeks and couple of day, I started again and. I thought I finish yesterday but now I woke up bleeding again. is this normal after bleeding or is it my period. I'm still taking the mini pill.