Hi,
the same thing happen to me. One light line that you could barely see and then a negative. I finally got a positive a week later and indeed i was pregnant.
Hope this helps :) And good luck!
You may have waited too long to read the results in which case the first test really wasn't positive...or it could be what one of the other ladies suggested. You need to wait and take a test with first morning urine. Make sure you follow the directions for how long to leave it in the urine stream or cup (whatever kind of test it is) and how long to wait for results. You should never read a test after the results time.
For more info on home pregnancy tests you can go to www.peeonastick.com
Take a test first thing in the morning.
I would definitely either call a doc and have a blood test done or I would wait and take another one in a few days with FMU Good luck!
The first test could have been an evap line, or it could have been a pos and the 2nd test could have been a false neg (maybe because you took it at 5pm your urine was diluted and there wasn't enough hormone to make it show pos?? especially if the first was such a faint line, you could still be very early).
I would buy a digital test and test with FMU. That way there is no mistaking the result. And FMU is supposed to have the highest amounts of hormones in it. If you can't test with FMU for some reason, then make sure you go at least 3-4 hours without peeing before testing, and don't drink a ton of fluid.
Good Luck!! And keep us posted!