pregnancy or just a missed period???

okay so my periods are usually late by a couple days at most but i am currently a couple days shy of 2 weeks late and i had my usual pre period symptoms like sore boobs/nipples (this time they were WAY more painful than usual), break outs, the odd cramp ect… but something just feels different. for example, my boobs got slightly bigger, as they do before my period, but instead of going back to normal after a week they’ve just stayed bigger. they’re also slightly sore but nothing major at all. i’m having weird mood swings but i’m not sure if that could be because of my borderline personality disorder or if it could be something else. my apetite has also been weird as i go from being able to eat myself into a food coma one day to not being able to eat more than a slice of bread the next. it could be nothing but idk should i be worried??