Hi. My period is 5 days late, slight cramping, pink discharge, headaches and super tired also change of libido.. but negative pregnancy test. Any advice?

Often urine tests will not show correctly till after 14 days late, sometimes even longer. So you may just be testing too soon. Also the time of day of the test is important, You need to test with first urine of the day, as soon as you wake up

Give it a bit more time and test again if still no obvious period. Or you could see your doctor and they may decide to do a blood test for you.