Surface water movement takes place in the form of currents. Currents move ocean water horizontally at the ocean's surface. Surface currents are driven mainly by the wind. Other forces such as the Coriolis effect and the location of landmasses do affect surface current patterns.
If the line is darker I would assume a BFP. Normally as Ovidrel leaves your system the line will get lighter. I was told by my doc that it could take at least 10 days to leave your system...which is why we're not suppose to test before day 14 (like any of us can wait that long). Congrats and best wishes to you!
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.