M.A.
My 1st test with my daughter was the same way. I waited another week and took another one and it was positive before I could even look at it.
As far as the drinking, you didn't know, so don't worry. I freaked out when I found out because I had gone to a wedding, and bachelorette party at that time, but the doctor told me that it was all fine, you don't drink constantly, and it was.
Keep us posted!