When Should I Test If Glows Says I started My Fertile window On 17 of this month all the way up to the 23 just want to make sure I dont miss My Day .... I have taken clear blue digital ovulation tests what u think ? What days should i test again ?

Should I test today 18 , or 19,21,22,23 ? What you think ? Dwn below are my test s I took of ovulation took one on the 16 because having cramps but nothing yet n took one yesterday as well not quite there .