Good luck. Did they tell you what the sac's measurements were last time and then this time? That will also tell you if it's growing. It honestly sounds like a new pregnancy to me. I m/c twins Christmas Day, bled for a few days and stopped. I had no signs of O'ing or AF at 5 weeks after. I had been testing everyday, my hCG blood tests were neg 2 days after the m/c and finally the Saturday before I was going to call my OB's office to induce my period I got a faint BFP on a Dollar Tree Test. I took them everyday until they were as dark as they can get. I went in that Monday for bloodwork including having my progesterone levels drawn and re-current m/c testing done. I was put on progesterone suppositories in case my progesterone was low, which it was. And now I'm 23 weeks. Good luck hun!