impending miscarriage

Jessie
On April 7, I got a positive pregnancy test after waiting for nearly two years due to Hashimoto's thyroiditis. On April 14 CD 28, 13DPO my hCG was 103. On April 17, my hCG was 276. While on a trip to Disney World last week, I started spotting and then bleeding on April 22. Early morning April 23rd I had intense cramping, some bleeding, and tissue loss. I was out of town, so couldn't go get my hCG drawn again, but I called my midwife and told her I had miscarried. This had happened to me in 2015, and I knew I had lost the baby. When I got home, they wanted me to stop by for an hCG draw. That morning (Thursday, 4/27), my breasts were sore and swollen again and I went in for the hCG. It was 1293. They had expected it to be nearing 20 or lower since I had been bleeding for 6 days. They sent me for an ultrasound and there was a small sac, but no baby. I should be right at 6 weeks. Before the ultrasound, they were recommending medication to speed the process, but now want me to get another ultrasound on Monday. My breasts are swollen and my temp is still high and bleeding has subsided to occasional spotting. What is going on with my body? They said I would probably still miscarry but I still feel like there's a tiny hope something is there. 
Anyone go through something similar?