Can I just buy treatment without testing?
We don’t advise you to do this.
Risk of unnecessary side effects – chlamydia is treated by using antibiotics. Taking antibiotics can have its own drawbacks such as feeling or being sick or diarrhoea. This means that if you do not have chlamydia you are taking medicines which can cause side effects for no benefit at all.
Problem of over-using antibiotics – also, taking antibiotics unnecessarily can cause bacteria to become resistant to the medicines. This means that future infections can become more difficult to treat. This doesn’t just apply to you, it applies to everyone because bacteria become resistant across the whole of the human species. It’s a very serious global health problem.
You could have a different STI – it could be that you do have an STI but it isn't chlamydia. Testing negative for chlamydia could mean you need to consider other STIs, or you can tested for more than 1 STI at once, using a extended STI test kit for example.
You might have a non-STI-related health problem – the symptoms of chlamydia can be very similar to other conditions (for example, cystitis or a problem with hormonal contraception). If you have a test come back negative, you might need further investigations which can only be done by a doctor.