Most adults know that there are some risks associated with having sex, we have some information in our FAQ's http://www.swingingheaven.ca/safe_sex.php
Also if you have concerns or require more information we would suggest that you review for further details on specific STI's and HIV
You should be aware that there are organisations out there that can carry out tests for you, they could vary depending upon where you live, more information can be found on the Public Health Agency of Canada's website