HCG Levels


My HCG levels at 4 weeks 4 days were 123. I went to the ER and found this out due to spotting brown blood… they told me to go to my OB on Friday to have levels checked again. Got the results today and they said they doubled to 250 at 4 weeks 6 days, but she wants me to come have the levels checked again tomorow. Is this normal? Are these numbers too low?

I am now 5 weeks 2 days