Period question vs pregnancy

Brittany • Tue, Nov 01

My period was due on the 27th according to this app normally I get it thee 1st but for some reason got it early in September so glow said the 27th it should be here it's Nov 1st now and no AF no positive test either now I'm sick throwing up running nose cold symptoms 2hat advice can ya give me as in see. Doctor ovulated late is it normal to just skip a period