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!
Blood tests can find hCG six to eight days after ovulation, and in most cases urine tests take about two weeks after ovulation. hCG is measured in thousandths of International Units, or mIU. Pregnancy tests with a sensitivity of 20 mIU/ml are more sensitive than tests with 50 to 100 mIU/ml. Manufacturers will display how sensitive their tests are using mIU as the standard unit of measure. Test sensitivity walks hand in hand with early-detection.