Missed period but negative pregnancy test. Is this normal???

Hi, so my period is 3 days late. I've taken 5 pregnancy tests all of which say I am not pregnant. I've had cramping but no bleeding. I'm really confused.

My period is usually pretty regular and consistent. I have been using the cheap tests, should I get a more expensive test and try that or is this normal??

Any advice or thoughts would be helpful. Thanks!

Update: it's now been 6 days... I haven't taken another pregnancy test yet, I'm starting to think I will , if it does come soon. I've never had a period be THIS late before.