i just don't get it!!

[dancing lilly]

any thoughts????

I am in the 2ww. 7 days ago I had a 2,500 hcg booster. RE said to pg test on Thur. (today is Mon). This morning I did hpt just for the heck of it expecting to see a faint pos from the hcg booster. I saw NOTHING! BFN. obviously i know any sort of pos wouldn't be accurate at this point because of the booster so, anyone know why it would be totally neg? I used first response early test. it is supposed to detect as little as 15-20 hcg. i know years ago i found an online chart that tells you the rate inj. hcg leaves your system but, can't find it now...

[MommaRitz]

Everyone women is different, most of them leave your system like if you do a 10k one by day 12-14. If your getting negative then it is probably out of your system.