I am so sorry. I have been there. try taking REESES" It is a over the counter pin worm medicine. It is a liquid. You drink it one time. Also try a fecal DNA stool test. I had a strongyloid worm and crptyospordium parasite. A meamatrix test DNA found it. Good luck. Itching all over the body is a sign as well. Especially at night. Constipation, severe nausea are other signs. Did you travel in a warmer climate like Mexico? Did you swim in a dirtt lake?