Subchronic hemorrhage?

Kimberly
I just went for an ultrasound with my fertility dr. Measured one week behind suspected due date. So I am only 5 weeks 5 days. He found a large blood clot next to the baby. :'( we did see a heartbeat flickering on the screen. He has me on pelvic rest and we go back next Friday. Anyone else experience this and continue on with their pregnancy. ?