Vaginal/vulvular itching is fairly common among women. It can be a symptom of a minor or a major issue, but you'll never know unless you are examined by your doctor. Doctors see all kinds of things - including itchy vulvas - all the time, so they're totally used to it. If you're too embarrassed to see your family doctor, you can always go to your ob/gyn. If you don't go there, you can go to a public clinic like Planned Parenthood. It could be simple itching, BV, or an STD - and a professional can diagnose what the issue is. Don't just go slapping creams or lotions on there without knowing the source.
Bottom line - go to the doctor.