I was due to start my cycle on the 10th and it didn't come. Today, the 11th, it still hasn't come. I took a clearblue digital and it said not pregnant. And today I have a slight pinkish show, which has only happened when I was pregnant. When I start my periods it has always been red and heavy. Could I be pregnant and just got a false negative? How long should I wait to test again? Has this ever happened to anyone?