I have had 3 pregnancies ( 1 miscarriage) usually I know for sure that I am pregnant before my missed period and before I take a test. Right now I go back and forth on it. I have light nausia, lower stomach pain (kind of like stretching), bloated and peeing a lot. I have taken 2 preg tests and they have been negative but I am not really suppose to start till the 18th. what do you guys think pregnant or not?