When to test when tired of bfn

Samantha • 28, married💍👰🏻 ttc #2👶🏼, we have a 5yo daughter👧🏼🎀2 dogs 🐺🐶, & a hamster🐭!
My last period was feb 7th and by ovia we did it the night before o. I was supposed to start March 11th but nothing yet.