I'm a week late on my period and I'm never late. I have been having regular periods for over a year and I took 3 pregnancy tests and they all showed up negative. I was talking to one of my cousins about it and she told me that she had taken a pregnancy test with her second child and it gave her a negative sign. When she went in to the clinic they drew blood and it showed that she was pregnant. Is it possible for a pregnancy test t be wrong 3 times in a row?

Yep. I took a test at 5 days late and another at 7 days late. Both were negative. Most won't actually show a positive until you are about 10 days late. That's when I got mine! You have to give the pregnancy hormone time to build up before it will show. Just give yourself a week and test again. If that still comes back negative you should go to the doctor for a blood test. You may still be pregnant, or you may just have missed your period. It is actually quite common! Good luck.