Thanks for writing.
We would recommend getting tested again. Most STDs will not show-up after 1 week, and it’s easy to get false negatives if you test too soon after sex.
For example, Chlamydia is the most common STD and it doesn’t show-up until 2-6 weeks after sex. Other STDs, like Syphilis, can take 3 months to show-up.
It would be good to get tested again. We would recommend testing at 2-3 weeks after sex, and 3-months after sex.
Hope this helps!
Please feel free to submit another question as needed.