Go to the ER. I was diagnosed on Friday with having a Sub-Chorionic Hemorrhage. Its a blood clot in your uterus caused from the blood vessels in the placenta. It can cause bleeding throughout the first trimester. They usually dissolve back into the uterus or the bleed themselves out. Ask them about this when you go. I had very light spotting on Friday night but it was from the vaginal sonogram.
especially if there was a clot.!!!!...i had same thing at 5 and 6 weeks brown blood went for a u/s at 6 weeks 4 days and everything was fine and they could see heartbeat...but my blood was just 2 spots not continuous...u need to get checked u could be miscarrying
you need to go to ER.. as bleeding is increasing which is not very good sign.. you need another U/S to make sure baby is fine in there.. at 7weeks you should be able to see heart beat... take care