Possibly miscarriage?

Lisabet
TMI PHOTO
IS THIS A POSSIBLE MISCARRIGE? I've been getting negative pregnancy tests but then this showed up after a very strange two day period. 
I'm having hot flashes, bad cramps and this stuff coming out of my vagina. I don't know what's going on...
My mom says it's a possible miscarriage. I didn't even know I was pregnant... 
This came out first ⬆️⬆️⬆️
then this started coming out ⬆️ after the blood, little by little...
Someone please help me.
I'm going to see if my doctor is open today. 
UPDATE: I went to the doctor today and she said it probably wasn't a miscarriage and it could be just stress from the kids and the wedding planning. I sent in the blood clot for a test just to be extra sure. Thank you guys so much for all your help. :)