Help!

Okay so my ex and I have been having sex lately... last week we had sex Tuesday( I think) and then I found out afterwards he had clamydia. Wednesday he was tested and treated... I worked crazy hours so I couldn’t get in to the doctor till yesterday. His doctor called yesterday saying he forsure has it... but my results came back negative? How the fuck? I’ve been having sex with him for almost 4 years how. There was a time we both did sleep with other people... and idk about him, but since we broke up I’ve only slept with him so??? I mean obviously if I had it I would have gotten it from him... but since we have sex regularly shouldn’t I have it also?

Update: I forgot while posting his... I’ve been tested multiple times in the last 4 years. He once had gonorrhea. After he was tested for it (idk if they treated him right away or not..) we had sex and used a condom. It broke but when I was tested it also came back negative. Everything he has had... I’ve never gotten?

I wasn’t sure where to post this so I’m posting it on a couple different pages..