My partner got tested and found out she has chlamydia, so I got tested too and all my tests result for STDs came out negative... As you can see, if she has and I don't... Where does it come from?

Some other detail that might have caused this, during intercourse with her a couple times I had bleed... My Frenulum ripped but we continue to have sex anyway... So is it possible for her to contracted chlamydia from me bleeding inside of her?

Thank you in advance!