When should I start taking ovulation tests?

My period always begins on the 28th or 29th or 30th being the latest. This month I got my period on the 30th.

And my Period goes for three days.

So I'm confused once my period ends on the third day is that when I start taking ovulation tests along with taking my temperature in the mornings each day?

I had two miscarriages in the past.

So I'm really hoping and trying this time goes smoothly.

Thank you ladies!