levels correspond to 5th week of pregnancy
after LMP. Low levels indicate either miscalculation of the date, blighted ovum
or ectopic pregnancy. Ultrasound
diagnosis, preferably by trans-vaginal route, should be made when the hCG levels reach 2000 mIU/ml. Quantitative testing for beta-hCG is much better when in doubt. Administration of hCG injections is not harmful as it is a natural hormone and is advised when definitely needed and no ill effects have been reported on the baby so far. So, do not worry. Please get further advice from your doctor. Good luck.