What the heck is going on??? UPDATE

Christi

Ok this is going to be a fairly long post, so please bear with me and read it through. I am so scared right now and could really use the advice and reassurance. Based on my LMP I should be exactly 7 weeks pregnant today. We got a positive test at 4 weeks exactly, so there's not much room for variation. Tuesday (6w5d) I was seen in the ER for spotting and cramping. My HCG was 23,000 and the baby was in the uterus and measured 6w6d with a HR of 142. Today I had the appointment with my OB for the dating scan and initial bloodwork. After the scan my OB told me that baby was measuring 7w2d but they couldn't find a heartbeat. She told us to prepare for a miscarriage. So now, a few hours later, my OB calls me and tells me that my HCG levels are still rising like they are supposed to, now at 33,750. She scheduled me for another scan next week but told me we shouldn't get our hopes up. I haven't had any spotting or cramping since Tuesday. I don't know what to think now! I am heartbroken that we may have lost our baby, but I'm not sure if it's for real yet. Should I be expecting a loss to come soon or is it actually possible that everything is ok? Has this ever happened to anyone before? I'm so confused right now. 3/6 UPDATE: I'm going in this afternoon for another ultrasound to see if there's any changes. Wish me luck! I'm so scared.