Hcg is increasing super slow, ob won't explain

Logan
I'm so worried I'm losing this baby..... I went to the ER sun night with spotting and clots. My pelvic exam looked ok, but my hcg was only 355. They said it was too low for 5 weeks pregnant. I had blood done again yesterday at ob and it came back 386. It's gone up, but she refuses to explain what's going on until she gets more blood work results back. I'm terrified as the bleeding is bright and hasn't stopped. It's enough to wear a liner, but not fill it. Why won't they say anything?! Has anyone else had low or slow hcg with bleeding? Did you miscarry?