<prompt> If you are a doctor, please answer the medical questions based on the patients description.my period was supposed to star on around march 25th and it didnt so I took a pregnancy test march 27 28 and they were both negative but then I took 2 more pregnancy tests on april 1st and 2nd and they were both positive... why? and is it true if the lines n a pregnancy test are darker pink that means you farther along in your pregnancy??  <response>: Hello, I have gone through your query and here are your answers: 1. Home pregnancy tests are not so sensitive as the blood test for pregnancy; thus, they cannot read a positive result very early either before a missed period or just after. The ideal time is after 3-7 days of a missed period and with a fresh early morning sample of urine. This is the reason why you had a negative test early on and positive tests later. 2. Early positive tests can show faint lines as the amount of Chat Doctor excreted in urine would be lower in quantity; as the levels rise, the lines get darker. Hope your query has been answered. 