I am 5 days late for my period (sorry, don´t know any of the acronyms used here), and I just did a test which was negative. But I think I am pregnant, so I went to buy another test, and the chemist said negative results are quite often wrong. The instructions in the new test say, if you´ve had a negative result but think you´re pregnant, it could be because the urine is too dilute, or too early in pregnancy. It said to do another test first thing in the morning.
Is it true that this is more reliable, using first pee? Does that match with people´s experiences? I want to use my second test in the best possible way, if you see what I mean - to get the most accurate result.