Miscarriage at 5 weeks?

Catherine
At 5 weeks 1 day (Thursday - 1/26), I started bleeding. It was heavy and gushed out. I passed a clot a little bigger than a silver dollar. The bleeding only lasted for 4 hours. I went to my RE yesterday (1/27) to have blood work and ultra sound done. My HCG level was 1386 (a very slow rise - up from 798 on 1/23) and again they couldn't see anything on the ultrasound. They said they wouldn't know anything until I get rechecked on Monday. They also said they were more worried about the ultrasound results than the slow HCG rise. I'm so scared that I lost my baby. It took 2 years to get here. I finally got my first ever positive after my first FET (after two failed <a href="https://glowing.com/glow-fertility-program">IVF</a> cycles and a year of trying on our own). I don't understand why the bleeding stopped if it was a miscarriage. I'm so confused and scared. Has anyone experienced anything similar?