Need advise??

I have 3 different apps like 'glow' and 2 of them said my period was due Friday 13th June (5days ago) and one said it was due yesterday (17th).. I have been having symptoms for about 2weeks, constantly tired, feel sick, bloated and some dizziness. I tested last Wednesday 2 days before my period was supposed to be due and got an obvious negative but still haven't got my period and still having symptoms.. When should I test again?? Been TTC again since a early misscarige in February 2014.. X