Well it seems a lot don't so here are the figures off the NHS wbsite.
Taken from the NHS website
External Link/Members OnlyChlamydiaSymptoms usually appear after one to three weeks, but could start much later. They include:
discharge from the vagina or penis
pain when peeing
vaginal bleeding between periods or after sex
pelvic pain in women
testicular pain in men
About 50% of men and 70% of women don't have any symptoms.
Genital herpesSymptoms can appear after four to seven days, but might not start until months or years later. They include:
small, painful blisters around the genitals
pain when peeing
a tingling or itching around the genitals
Most people don't have any symptoms when first infected.
Genital wartsSymptoms usually appear within two to three months, but could start as early as two weeks or not for several years. They include:
small, fleshy growths or bumps on the genitals or around the anus – these are usually painless, but may be itchy
Most people with the virus that causes genital warts don't develop obvious warts.
GonorrhoeaSymptoms usually appear within 10 days, but could start much later. They include:
green or yellow discharge from the vagina or penis
pain when peeing
About 10% of men and 50% of women don't have any symptoms.
Pubic lice and scabiesSymptoms usually appear after five days to five weeks, but could start later. They include:
itching around the genitals (usually worse at night)
black spots in your underwear
small spots of blood on the skin near your genitals
a spotty red rash
SyphilisSymptoms usually appear two to three weeks after first becoming infected, but could start earlier or much later. They include:
one or more small painless sores or ulcers on the genitals
a blotchy rash and flu-like symptoms that may follow a few weeks later
Symptoms are often not obvious and may come and go.
TrichomoniasisSymptoms usually appear within four weeks, but could start months later. They include:
discharge from the vagina or penis
pain when peeing
itchiness or discomfort around the opening of the vagina
About 50% of men and women don't have any symptoms.
HIVThe first symptoms may appear after two to six weeks. They can include:
flu-like symptoms, such as a high temperature (fever), a sore throat, a headache, and achy muscles or joints
a red rash on the body
Not everyone gets these symptoms, but in people who do they usually last a week or two.
After they disappear, you may not have any further symptoms for many years, even though the infection remains in your body.