Worried about HCG levels.

Hi All,

I'm probably around 4 weeks 4 days pregnant and I am concerned about how my hcg has risen.

On 2/24 my blood was drawn at 12pm and returned a result of 242.

On 2/26 my blood was drawn at 10:50am and returned a result of 381.

That's an increase of around 59% in 47 hours, so now I'm worried.

Anyone experience similar numbers and the pregnancy was viable?