When to test 😣

Hi everyone,

So i have been buying the digital ovulation tests and last month i had my peak on cycle day 27. I have PCOS and had an ectopic back in febuary. I would have normally stopped testing by day 20 with test strips so im so greatful that i went digital. But now I'm wondering what day to start testing. I don't want to miss my surge but these tests are so expensive i don't want to waste them either. Im scared I'll ovulate too early or too late lol ! I'm just so obsessed and lost on what to do any suggestions? 😳😁