Take a test or not

Based on my calendar . I am 16 days late of my period . I took a test when I was 10 days delayed and it was negative . I felt tired and headache but I’m thinking maybe my period is coming . I’ve been craving fries with hot sauce lol . Kidding aside . Do I have to take a PT or just wait til 30 days misssed period ? Thanks for your respond in advance