Hello I Have A Question I Think I Miscarriage And

Hello I have a question I think I miscarriage and why I say that is I spotted in July augs and Sept my period is always 7 days regularr. I had all systems of being pregnant but I rent was in a car wreck I told the dr what had been going on but once they gave be a pregnancy test it came back negative I didn't understand the a couple hours later I started pouring of blood it's been 10 days I haven't stopped I am having pains and blood looking clots do you think I'm write and i misscarged