Am i over thinking or?...

So my whole life ive had pretty good skin only a pimple here or there. Well the past 2 weeks my face has been breaking out and ive been getting dizzy spells (which also happened when i was in early pregnancy with my second son) yesterday and today lower back pain and some nausea my period is 3 days late according to the app (but then when i hit the *my period is late* button it pushed it out 2 more days?) so i took a pregnancy test and it was negative but i took it at like 2pm so im either just late or too early to tell? Ugh. Litterally hate this whole not knowing thing.