How many DPO should you wait to test?

Mrs. A • Mon, Aug 22 • Mama and Wife. Photographer and aspiring MUA. Always waiting for Halloween.

I like to plan ahead. I should be ovulating sometime in the next few days.. so when do you think I'd be able to test and get a positive or even a faint positive? Just so I can write it down and then on that day I can test. I'm just super anxious and like to know how many days I'll have to wait! Thanks!!