Still bleeding and worried

Really worried 😞

Had my 6-8 week PP check today and I’m 8 weeks PP....

Dr was worried that I’m still bleeding a lot of red blood in the mornings and she then felt my uterus and said it’s not fully gone back into my pelvis yet 😞.

I’ve been referred for an urgent scan and I had swabs taken.

Has this happened to anyone else? What happened? Thanks