Understanding Potential Pregnancy After Unprotected Sex

Question
I had unprotected sex with a girl 6 days ago.  On the sixth day she tells me she might be pregnant and we get a test kit.  She takes the test and says she was.  I wanted to see it for myself and make sure.  I know I saw the first pink strip but where she was saying there was the other one I couldn't see anything.  Is it possible for her to be pregnant 6 days after having sex with her?  Then called me back saying maybe since she was drinking leading up to taking the test that alcohol might have effected the test.  I am not sure what I should do.

Answer
HMM, interesting.  I can not tell you if she could have found out six days after having sex really.  It depends on where she was in her cycle, what time of day she tested, and what kind of test.
She could be pregnant then, but if she could tell on a test is debatable.
Drinking would not effect the results.  Good luck with this one, be careful.