Hi I had done my IUI first cycle.What does BetaHCG indicate exactly?? My 1st test shows 21 unit, yet to get reprt of 2nd HCG. However, i was told to meet doc once i get my chums. my confusion is if Bhcg doesnt not double in 2nd test, is that the indication of failed IUI? if BHCG has not doubled , does that mean i have not conceived???