Help! When to test?

So my period is currently 9 days late I had unprotected sex my last two days of ovulation because I mixed up my ovulation schedule and so now I’m freaking out I’ve taken two test both were early response test and they were both taken before I was late the were negative I don’t know if I should trust the test results or test again since my period still hasn’t come and I haven’t shown any of my usual PMS symptoms except for sleeping a lot and being a little sensitive emotionally