Thanks for your question.
The time it takes between contact with an STI, and when you can get an accurate test is different for each infection. We call this the STI’s “window period”. Some STIs can show-up within a week, and others can take a few months.
Generally for testing we recommend waiting until 3-4 weeks after sex. If you want to re-test after 3 months, that would give you your final results. If you have any symptoms arise, we would recommend going in to a healthcare professional sooner.
For more information check out our Types of STIs chart. The chart gives the window period for each STI. If you’re concerned about a specific STI you can see when would be most accurate to test.
Hope this helps. Please feel free to comment below or submit another question as needed.