What Causes Fainting Spells While Standing Up, Soreness In The Genitals And Loss Of Appetite?

pass out everytime I stood up couldn t eat for days also was sore in my private area my doctor came to my house and looked bellow and said that I have hsv2 never took a swap or anything and since then I have only been uncomfortable down below twice in 7/8 years can a doctor tell by just looking that you have hsv2 never been tested could the doc have misdiagnosed me