could these be pregnancy or period symptoms?

Sophie

Hi I am ment to be on my period today but nothing I have for the last week had a metal taste in my mouth on and off bad headaches feel like in not in the room and tired (but in always tired) I feel nauseous and have a pulling feeling in my stomach have hiccups and felt like my stomach is very swollen and bloated I did take a test money and it came back negative so I think I'm over thinking it?