If you are pregnant a test can still show up negative because the chemical may not be in your urine yet. But if it is positive the only reason it could be wrong is a faulty test(which doesn't happen often) you may want to wait a while and check again or see your doctor.
I'm now on cycle day 53 and usually I'm every 33 days... I feel your pain
Im planning on moving soon but i dont feel very stressed.
Maybe it's stress . Are you stressed about anything ?
Im not on any medication at all. And i took 2 pregnancy tests that both came out negative.
Are you on any medications that would prevent your period from starting..You should see your doctor if your not pregnant so he can give you something to start your period..Good luck..