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Do not perform sexual activities while being treated for chlamydia

  • chlamydia
  • azithromycin


"I found out I was positive for chlamydia on Wednesday. I was prescribed 1000 mg of azithromycin and took the medicine on Thursday. On Sunday night, I made the mistake of performing oral sex on the man that probably gave me the chlamydia. He ejaculated into my mouth. I know the antibiotics are still at work in my body, but should I take any new action after the recent exposure? I am concerned."

- Anonymous


Thank you for your question. We have been asked this question in many forms numerous times.

When you receive treatment for any STD, including chlamydia, it is very important that you follow your physician's instructions. Doing anything other than that can lead to you infecting other people or becoming reinfected yourself.

We have no way of knowing exactly what your doctor instructed you to do. However, a typical scenario for chlamydia treatment is as follows: you take a dose of antibiotics, abstain from sexual activities for seven days, and, at the end of the week, you are fully cured of the disease. Since you did not include your doctor's instructions in your question, we will finish answering this question under the assumption that your instructions were similar.

When you take antibiotics for chlamydia, different people will be fully cured after different amounts of time. Since some patients become cured more quickly than others, doctors typically tell people to wait seven days before participating in sexual activities to be sure that the chlamydia in their systems is fully gone.

Let's take a look at the first possibility: that between Thursday and Sunday, your body completely rid itself of chlamydia. While this is unlikely, given that it was only three days, it is not impossible. Under this scenario, performing oral sex on the person that you suspect gave you chlamydia in the first place, you are at the same amount of risk that you would be if you had waited the full seven days that were instructed. You can become infected with chlamydia multiple times. If you take an antibiotic and become cured, it is not the same as taking a vaccine. You can catch chlamydia again. 

Since this is a real possibility, you should get yourself tested for chlamydia again. If you test positive, be sure to follow your doctor's instructions this time.

The second possibility is that your body had not finished fighting off the chlamydia infection. Under this scenario, you are able to spread the disease to any of your sexual partners. You did not mention whether or not the man that you suspect of giving you chlamydia got treated. If he did, it is possible that you reinfected him. He should get tested for chlamydia again as well.

We hope this answers your question. Be sure to abstain from sexual activities for the full amount of time that your doctor instructs you to. If you do not, you risk infecting yourself another time or infecting your sexual partners. Please be safe! 

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