How long should I wait?

Ebony • Ttc baby #3 after an 11-year break

I suffer from migraines and went to the doctor yesterday because we're ttc and a lot of the prescription meds are contraindicated for pregnant women....

I was 7DPO and they asked me to pee in a cup for a routine pregnancy test. Of course it came back negative... my question is: how long should I wait to start testing again? Are their tests more accurate than the ones we use?