Okay so my husband and I are trying to have a baby. I am 13 days late. I am not normally late. I am always on time but its usually really long. I have taken 3 test all came back negative. I feel pregnant and have had some symptoms. I am not sure what is going on. I have a dr's appt on the 31st. I also have PCOS. So does that have an affect on the test?