This is a common question. Your risk for getting an STD depends on a number of complicated factors.
What are my chances of getting an STD?
STD Risk Calculator can be used to determine your risk of getting chlamydia, gonorrhea, syphilis, HIV, herpes (genital herpes caused by HSV-1 or HSV-2), and HPV (an infection that causes cervical cancer and genital warts). To demonstrate how complicated these factors are, just consider your chance of getting herpes or your odds of getting HIV before trying a risk assessment.