I don’t understand this glow app


I was suppose to start my period like Thursday or Friday of last week which would have been the 30th of July but since I didn’t put nothing now it’s saying I should have started August 1st. 🤔 I’m so confused but it’s August 4 and still nothing? Should I wait to take a test or should I take a test to see or do you think I may be going through early menopause? I’m so freakin scared because I have had like three miscarriages please someone help!!!!!!