I have a white spots on my lips and inside my mouth, how i know if its fordyce spots or sexually transmitted diseases?.thanks

Fordyce Spots: Fordyce spots are harmless small yellow-white spots found on the lips and genitalia, both the penis in men and the vulva in women. They are caused by sebaceous hyperplasia, a kind of overgrowth of the lubricating glands, which keep the skin from drying out and cracking. They are not found inside the mouth. See your doctor for a diagnosis.

Maybe: Fordyce spots/granules are found in the mouth. 82 percent of the population has these spots. However, you need to a doctor for a definitive diagnosis. They are more yellowish in color.