"It is very unlikely, but possible. Some people, for example, are born with HIV, which they can pass to other people later in life when they start having sex. People can also pick up herpes through casual kissing — even from friends and family. Their herpes infections can then be passed on sexually. The chances of this happening are rare, so it’s not something to spend time worrying about. On the other hand, it’s another one of the many good reasons to always use condoms when you have sexual intercourse."
"If you are sexually active tell your doctor and get regular check-ups. Many STDs have no symptoms. When symptoms do occur, men and women may experience symptoms differently. Common STD symptoms for women may include: unusual vaginal discharge, sores, bumps, burning with urination, pelvic pain, vaginal itching, and vaginal odor. Common symptoms for men may include: discharge from the penis, burning with urination, sores, bumps, redness, and testicular pain."