I am currently having a natural miscarriage and hv been passing alot of clots/tissue?

I have been in this state now for 4 days with the passing of clots and TONS of bright red blood....heres the weird thing i work 2nd shift n ive only been experincing these symptoms while working....i.e. Light bleeding at home n at work every 10 mins i hv to use the bathroom cuz i can feel the oozing n thats when ill pass the tissue/clot....so my question isis this normal n how long many days will i keep passing these clots? Sounds gross but ive passed 17 liver looking pieces in 4 days....i was only 6 weeks when i started miscarrying....plz n e help!