I’m late

I’m 14-15 days late and I’ve been taking test after test but it’s still negative the only times I ever missed a period was when I was pregnant or during my miscarriages that’s it I never not get one even if it’s for a day I still get a period has anyone gone through this and are pregnant. got symptoms of pregnancy I can’t get into the doctors appointment unless the test come back positive so blood test wouldn’t be possible yet the hospital hates doing blood pregnancy test for some reason unless it’s a true emergency