Pre Pregnancy Symptoms

Hi mummies, I am quite puzzled with all the symptoms that I am currently facing. I experience cramps and very light brown discharge 4-5 days before my period due date. *do take note that my period never came earlier than the actual date before, it is either on the dot or few days later*. And the next morning when I woke up, I experience sore throat and fatigue. I decided to take a pregnancy test but it was negative. I still have 2-5 more days before my period due date. Has any mummies experience such symptoms? Thanks!