BFN but still no AF

•_•

AF was supposed to show up lat week thursday (4/12) I’ve been having mild cramps on my right side, light nausea & these last few days a little more discharge than usual & mild back pain. She still hasn’t arrived today (4/17). I took a pregnancy yesterday afternoon & it was negative & i just took two & both were also negative. I don’t know what to do. Should i test this weekend again?