HELP!!! Very low HCG back to hospital today

Hey ladies I need some advice if anyone else has been in this position. My hcg levels are super low! Was suppose to be 5w4 days and only at 134 then 2 days later it went up to 284! But I’m 6 weeks and it should be in the 1,000’s by now! I’m going back to the hospital for another draw today to see if it’s rising but my Dr said it doesn’t look good and potentially end in miscarriage! Any success stories or advice!! 😔😥