Bleeding during the beginning or the 5th week

Amanda
Wednesday I started having like dull pain up near my ribs it would come for like 2min and be gone for hours and come back. Well yesterday I woke up and my back was sore and that dull pain was there took some tums and the dull pain went away but the back pain was in the middle of my back at my spine. Threw out the day it got lower and lower and ended up in my hips well I woke up this morning fine no pain. I take my youngest daughter to a birthday party and do some grocery shopping come home go to the bathroom and have like a brown blood clot come out with light bleeding following not really anything you could see without wiping. 
Is this normal or should I worry I have no pain today!