Late period negative pregnancy test

Sha
So I'm 5 days late been cramping since a week ago spotted light brown like a week ago I thought it may of been implantion bleeding from the look of it... But the negative test threw me off... But now I'm cramping and bloated no sign of period or blood I need answers 😭😩😩. I'm extremely tired, I pee a lot and the backaches😭😭