What happened?!

Tray.

I'm sorry for the gross picture but someone please help. I had about 8 positive pregnancy tests over the past month( some very faint then got super dark) ... Last one was taken on Saturday. I am 1 1/2 weeks late on my period so I chalked it up to being pregnant! 5 1/2 weeks if I am correct. Then this happened today. Started out as bright red... Then started clotting. Now this?! Did I have a miscarriage? I have been lightly spotting on and off since my first test 9/6. My first doctor appointment was scheduled for this Friday. What do I do?