My husband and I have been trying to get pregnant since October and this month I have been getting dizzy spills, mild headaches here and there nothing to bad and my stomach has been cramping (like i am getting my period but nothing) took a few pregnancy tests and nothing. I am about 5 to 6 days late and i really dont have any stress in my life. Don't know if I am pregnant or not. When should i go to the doctor to get a blood test to know if i am or not.