could i be pregnant

Been having symptoms for the past 10 days.
such as tender breast i mean so sore i have to sleep with my sports bra on, very tired,im going to the toilet every hour or so. some nausea all tho havnt vomited yet.
but certain food cant even go near them but on the other hand im eating this ive never liked and theres the headaches that dont wanna go away.

anyway im really bad with keeping track of my periods i know im about dew the 20th of every month, but did a text yesterday and it came out negative

any ideas and advice would be great thanks

Perhaps it is too early too tell if you are pregnant as there may not be enough HCG hormone?