Ovulation test

Carlin

Hi! After my next cycle, I'm going to do ovulation tests daily because I can never catch it around when I should be ovulating according to my calendar so I think I may ovulate at weird times. Before, with our son, we had 18m of unexplained infertility and I would love to avoid going through that again if we can. Is there a best time of day to test for ovulation or is there anything specific I should do to figure it out? TIA!