Hi I'm a 47 yr old women who is experiencing breast tenderness nad headsches and neausea and my period last month was a lot shorter and a lot lighter. I had a blood preganacy test done last friday it was negative. but then on sat an sun i had some light spotting i didn't even need to use a bad or tampon. that ended on sunday. Saturday was when my peroid was due. So i have these symptoms for about month. So do i need to take another blood test in month . my periods have always been regular.