Ovulation tests

Grace • Girl mom♡ 5/2014 & 4/2020
So I have had very irregular periods since I had my daughter 2 years ago and did not try to get pregnant with her. I have been ttc for about 11 months now and still nothing. Soooooo I just bought ovulation tests and was wondering when would be the best time to take them. A week or 2 after my period? Every day until I get a you fertile one? Help!!! My husband and I want this so bad!!