This article is from the General Pregnancy FAQ, by swnymph@FensEnde.com (Sabrina Cuddy) with numerous contributions by others.
> I have a question on the blood test you can get at the doctor's. How
> soon after conception can it detect a pregnancy?
I was totally impatient too--My doctor said that a blood test would
show positive 10 days after conception, and I was dying to know so I
went in 10 days after my blue line. The test was negative, I cried and
cried, wanted to die for awhile, accepted it, and looked forward to the
next month. Then two weeks went by-- no period. I was frustrated,
figured I'd have to take provera to bring it on or something. I did a
home pregnancy test for the hell of it, and lo and behold it was
positive! So I jumped the gun. I would recommend that you not take a
blood test until you are pretty sure it's 10 days after ovulation.
What happened to me was an emotional roller coaster!