Help!!!

I really need some reassurance and advice... I’m currently 5/6 day late.... but all the test I’ve took come out negative, I have been feeling some food aversions and night nausea.. I have a weird taste in my mouth and was feeling cramps that are on and off I’ve been sleeping more then usual. I don’t wanna get my

Hopes up but I’ve never had a late cycle but why are the tests negative