sorry to say, YES it is too early even for early testers. the earliest it shows up is usually 7 days past a 3 day transfer. hang in there for a few more days before trying.
you actually have early betas. my dr. makes me wait 13 days past transfer and your is only 8!

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Rachelle

TTC #1 from Jan 2002 to July 2005, Miscarriage 2/3/03- 1st Angel
1st 3 tries on injectibles/IUI - FAILED
IVF #1 #2, and #3 4/04, 8/04, 10/04 -FAILED
IVF #4 5/05 - FAILED donor eggs
IVF #5 7/05 DEFET- SUCCESS (10, 9, 4, 2 cell) Shelly Marie born 3/28/06

IVF #6 DEIVF 7/07 FAILED Betas 16.9 and 13 -Chemical
IVF #7 DEFET -11/07 (10, 8, 7, 4 cell) 12dp3dt beta 187, 14dp3dt beta 490, Miscarriage 12/17/07 2nd angel
IVF #8 DEFET 4/2/08 - (9, 9, 4 cell) 13dp3dt beta 203, 15dp3dt Beta 456. Miscarriage 5/12/08 -3rd angel

Done TTCing. Adopting
Homestudy approved 11/08. Officially active 1/09. . . hope to adopt by end of 2009