BG when you are talking about progesterone level of 32. That has to be tested through blood right? Does it have anything to do with the uterine lining? I know when I did iui, the doctor would tell me the lining or something like that. I guess i don't even remember. I think one time it was 7.5 and another time it was 9. I think I may be confusing the progest level with the lining number.