These should be used as a guide only. HCG levels double approximately every 48 hours during early normal pregnancy and you should always discuss your results with your Doctor if you have any concerns.
So you are somewhere between 5 and 6 weeks? Remember this is a suggestion only. Many women start off low and have successful pregnancies, but unfortunately some with low hcg's don't have the same success. Really what matters is that your hcg is doubling nicely.
Have an ultrasound if you are concerned, and good luck!
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