Hi,
Genital sores could be due to dermatitis, infection, vulvar dysplasia and possible sexually transmitted diseases. This is usually associated with pain, pruritus, discharge or may even be asymptomatic. It is good that you will be having this evaluated for proper diagnosis and management. A complete medical history, physical and pelvic examination will be done to help with the diagnosis. Other tests such as a complete blood count, blood differential or skin biopsy or culture may also be done. Try to avoid scratching to prevent secondary infection. A hot sitz bath may also help. Treatment will depend on the underlying cause.
Take care and regards.
I should say the 2-3 sores are more like 1/2inch apart