Can the doc be wrong on how far along i am i was told 5 weeks but my hcg levels as of monday were 23?

Within normal range: There is a wide range of "normal" HCG level during pregnancy. Typically expect the following ranges: 5 weeks LMP: 18 – 7,340 mIU/ml 6 weeks LMP: 1,080 – 56,500 mIU/ml HCG will peak during pregnancy around 8-12 weeks. Your lab result is in the normal expected range. Remember each woman's level will differ even at same time of pregnancy. Important to recheck in near future to ensure uptrend/rise