Whats wrong with my baby?

First thing to do is not get stressed - that can harm the baby more than anything. Secondly, a pregnancy test is accurate and you ARE supposed to take it with the first urine of the day as your urine isn't watered down so maybe its just saying negative as it was watered down - depends on your diet, although I am sure this has happened to more women. Chances are if you are showing signs of pregnancy, missed your period, tender etc. and had FIVE pregnancy tests positive in a row, I wouldn't worry - last thing you need is a miscarriage. I would say if you are pregnant there is nothing wrong with the baby, you would feel something is wrong, bleeding clots etc. So don't worry!