Stitching material in blood ...

So I’m 9 weeks post op and I’m still bleeding my initial bleeding after surg stopped after like 2 weeks after my c section, I’ve been fab but started bleeding again been to the docs and got told it’s to do with hormones from my pill period kind of thing. So I’ve found odd bits in my blood - it’s not much blood at all just little bits day to day but I’m sure I found abit of the dissolvable stitching today like the knot bit ... is this normal and I also found this .... like a cord type of thing .... I can’t even explain it 😳