Needing help

So I had a period 16-19th I found out I had Chlamydia the 26th but got tested for it the 20th I didn’t get treated until the 28th I also have PCOS but I’ve had periods monthly for over a year now… but anyways I haven’t started my period yet I took a pregnancy test on the 9th it was negative but still haven’t started do I retest, was it too soon on the 9th what’s your opinions…