Again, I insist you dont have pinworms; rule that out safely.
Yes you will know what you have.
Also, until you know, stop eating all salads, and RAW FOODS. Unless you cannot boil, wash and peel, yu dont eat it. Many people these days get parasites, because they often eat socalled "healthy" diets' such as raw foods, juices, and salads, which come from south America, and often comtaminated with fecal mater and parasites.