When to start ovulation test's? ??

Melinda • I struggle with endometriosis..For 5 years now I`ve been trying to get pregnant. . Did the whole fertomed cycle twice. Had 3 operations already everything looks normal and i even checked my folicals*
Just curious on when to start ovulation testing cause I got the clear blue pack, now waiting patiently until it's time? ?? any advice? ? I could use alot???