Donor egg IVF cycle and HPT?

Hi! I just had 2 day 5 blastocysts transferred (donor egg cycle..so no HCG shot..).
Today is 3 days after the transfer...this morning i tested with a HPT and it was negative.
Is it too early? They say that day 5 blastocysts usually implant 24-36 hrs after transfer.... so when would enough HCG hormone show up in my blood (if i'm positive)..to show on a HPT?

[missienal]

I'm not positive, but I think it's like 12 days after transfer is when you test.

GL!!

[Kricket212]

I tested positive on day 8 but yes 3 days is way to early.  Good Luck!!

[Redhenful]

Thanks guys!! I feel better now.... :o)  I'll wait a few more days to test again...