Please help me. Been without period know nothing anymore lol

Vic
I still haven't gotten my period but can you help me understand. So these green ones are posies ovulation days so how would I know when to test if 7/17 was when il got my period - http://glowing.com/community/topic/72057594038363567?utm_source=android&utm_medium=shared_to_third_party&utm_campaign=glow_community