
On December 16th, I got an STD test where I tested negative for chlamydia and gonorrhea. At that point, I had been in a monogamous relationship with my boyfriend since end of October. In September, he had his last STD test in which he tested negative for everything and he claims that he wasn’t with another girl between then and when we met. Anyways, I just now had another test after some symptoms and I tested positive for chlamydia. So my question is, is a result of infidelity? Is it possible that I got it before I met him and it didn’t show up in my results in December for some reason? Or that he has had it all this time and simply lied to me about getting tested, and I just now contracted it from him?
To add more background, we don’t use protection and have never used protection. I’m on birth control and trusted that he had gotten tested, and although we were both aware of the risks of pregnancy we choose to be stupid because we both enjoy it so much more without a condom.
Essentially, before I accuse him of lying or cheating I would like to know what all the possible solutions are. Thank you in advance.
Felicia, Reddit.
Dear Felicia,
Let us first establish the timeline.
- September: Your boyfriend gets tested negative for everything.
- Between September & October: You two meet. He claims to not have slept with anyone in this timeframe.
- End of October: You enter into an exclusive relationship with your boyfriend.
- Mid December: You test negative for chlamydia and gonorrhea.
- February: You test positive for chlamydia.
While CDC isn’t clear on the incubation period for chlamydia, this 2011 study indicates that the chlamydia can incubate between seven to twenty one days. If that is the case, then it is evident that you contracted chlamydia following your mid December test. If your boyfriend had contracted chlamydia prior to October, then you should have already started seeing signs of the infection about a month before the test. It just seems highly unlikely that he lied about his September STI screening and happened to have had asymptomatic chlamydia the entire five months you’ve been together.
With that said, it isn’t completely out of possibility that you somehow tested negative for chlamydia while carrying it back in December. But the likelihood of that seems highly improbable.
So in short, it does seem likely that he has cheated.

But this is really all just confetti.
Even if we establish that you contracted chlamydia through his sexual infidelity, we have a bigger issue with lack of proper safety precautions. While it is true that BC pills protect against unwanted pregnancy, it does nothing for unwanted STI transmission as you have discovered here. Furthermore, condoms do not protect against other skin-to-skin STIs like herpes or syphilis.
It is very important to keep in mind that there are multitudes of risk to be aware of. And while your chlamydia might do away with a single dose of azithromycin, the emotional harm that comes with contracting an STI has more profound implications. For one, it is apparent that your soon-to-be-ex-boyfriend also had very different risk thresholds as it pertains to COVID transmission. After all, we are all currently in the middle of a serious global pandemic. Even outside of the pandemic circumstances, most folks have put dating on hold until the overall risk levels becomes more manageable. And each risk you take is a successive undertaking that you need to be conscientious of for not just yourself but for all people you come in contact with.
Please be mindful of the risks you are taking for not just this relationship but for all other relationships you might have in the future.
Good luck!

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