I'm 31 f. a week before my period i always get irritable and angry like every little thing can irritate me, urge to throw stuff, even depression only a week before my period and a few days after my period... normal hormones?

I've always attributed premenstrual tension to hormonal changes causing fluid retention which affects the brain resulting in personality changes. When this becomes very problematic, I prescribed a daily low dose diuretic for a week before the expected period with very good results. Be sure to eat potassium rich foods during the diuretic week. Your gynecologist may not agree with this treatment.