When should I test?

I haven’t had a period since February so I have no idea when my period should be due. This month is our first month trying with my OB’s help. I started Provera on 7/9 and took my last pill on 7/15. I am supposed to start taking Clomid on the 5th day of my cycle if/when it starts. Hubby & I have been sexually active everyday since 7/9 and my ovulation test was positive on 7/17. I took a pregnancy test today just because I was curious and it said negative. How long should I wait to test again in hopes of getting a positive? I used the First Response pink dye test today & will be using that again for future testing. Thanks y’all♥️