17 days late

Victoria

I have taken test after test all negative. I have an appointment Monday to see a doctor. Has anyone had this happen and be pregnant? I have been having cramping but not like my period but no bleeding. I had the tiniest bit around two days after my period was supposed to happen but it was a drop or two just when I wiped. Then none I wore a panty liner just in case nothing. Fingers crossed that the test are just messed up.