Hi, my period is now 16 days late it has been regular for a year and a half, I am not really experiencing my normal period symptoms. I have had some mild cramping in my back, I have had the worst headaches for over two weeks and my boobs are so sore, I am also experiencing a lot more milky white discharge than normal and I feel sick a lot. I have taken some strip pregnancy tests and they all say negative. Has anyone else had anything like this when pregnant or is my period just messed up this month??