Period Questions?????

I get my periods regularly same time frame each month I usually pms horribly I have the sore breast that's unbearable headaches tears etc etc which starts about a week or so before my period actually comes this month I've been waiting for my normal symptoms... none... on this app it says my period should come tomorrow as my own knowledge tells me but still no symptoms I did start to get these little cramps a few hrs ago so I'm hoping sore breast (which is usually my most significant sign of my period approaching) is just not coming this month also since about 2-3wks ago I've been super aroused like I constantly have the urge for sex & yes this is a pregnancy scare I'm 22 in college,house,car,job & a 3 yr old yes we should be more careful blah blah so please don't comment w/ that type of comments I just wanna know if I'm just overreacting nd freaking out over nothing