Given the dangers associated with casual sex and STDs, it goes unsaid that the more partners you have, the higher the risk of an unwanted infection. The best preventive measures, however, are to stay faithful, have one sexual partner, get tested, have protected sex—you can even get infected through just oral sex—and most of all, just be honest. If you really want to get tested and you have your suspicions, just be honest with the doctor. Fabricating any crazy stories and excuses will only mislead the doctors with testing. STDs have various incubation periods. Some diseases like Gonorrhea begin to show symptoms in 3 days, whereas Syphilis can take up to 3 months. Therefore, if you are not honest with your doctor, they can miss some symptoms. Dr. Vaňousová said, “A lot of people tell very interesting stories that are not true and they don’t mention that they have had extramarital intercourse. Many doctors are misled and some skin diseases can imitate STD infections. Just be honest and live a healthy sexual life.”