Your symptoms direct in two ways. its UTI probably / PID pelvic inflammatory disease
or it is pregnancy
( do an ultra sound
to rule that out) as many of signs like nausea , diet perversion, smells perversion etc breast changes point to that.Anxiety
and psychiatric issues also lead to these symptoms.
SO its a multi directional history and a one stop visit to gynecologist will sort out what it is. So what are you waiting for? Grab your coat and head of to near by gynecologist and seek help. Also have some psychotherapy
sessions to help.