Some questions about my miscarriage on Saturday-really concerned?

(I was about 9 weeks, when this happened)
So I had been having some brown spotting for a few days, then on Friday the brown turned to pink/watery with some mild cramps, then on Saturday I had the most incredible pain, in my stomach, it was so bad I had to go to A&E, the blood was literally pouring out of me, I was sat and worried that when I get up, there would be a big red patch on my trousers, it was that bad.
Anyways I was asked to do a urine sample, as I did it I felt something really heavy fall out and when I looked, I promise you, it was the fetus, it was huge and had a giant head and small body, kind of like a giant tadpole, it was really horrible.
At the moment (3 days after) I am still bleeding, and i am still having cramps, not excruciating, but they are painful.
My questions are…
-On the saturday when the ‘baby’ came out, was the pain I experienced before that like labour/contractions?
-I took a pregnancy test and it was the darkest possitive and so quick!, why is that?
-Why am I still having cramps and bleeding?
-Did anyone else experience this?
If you get through this essay and reply, I can’t tell you how greatful I am!
Thankyou in advance