Miscarriage?

Melanie
So since thursday i have been bleeding started out brown then turned to red. Its more like spotting...well then yesterday i was on my feet a few hours and when i pulled my underwear down there was a glob of tissue. My dr re checked my levels but wont get results till tuesday.. Was the tissue my baby? I still feel pregnant, sore boobs, tired, nausous but i keep crying cause i am terrified that was my baby :( PLEASE any advice would help please