I want opinions

So me and my SO are TTC and for the past week or so my stomach has been real queesy(spelling) and yesterday when I woke up to his alarm I felt like I was literally going to puke got that metallic taste in my mouth and everything!! This app says I'm supposed to start my period today but I have no signs of starting(ex cramping or anything like that) I want someone else's opinion on what should I do???!!!!!!