Week late, negative test, anyone have that happen?

Shikay

Like in the title I’m a week late, on Sunday I took a test got a vvvvvvfl but I took some more 3 days after and they are now negative

Is it still likely I could be pregnant or not really

Has anyone ever had to wait two weeks for there vfl?? Is that normal. Not exactly sure what I should do at this point besides wait. Just scared something more concerning is wrong with me :/ I need help!! ( I forgot to add another “heart” day between the 15th and 22nd I can’t

remember the exact day tho)

I also had a fever Friday, since they it’s gone, I’ve been extremely nauseous and not really want to eat, Constipated, and cramps here and there that feel like my period