Hello It might be urinary infection if you are running some fever or there is burning sensation along with urination. This happens sometimes after unprotected intercourse. U must see for any virginal discharge in which case you have to visit a doctor for examination. If there is a virginal infection then injectable antibiotics course should be sought. If there is no vaginal infection then only a course of oral antibiotics like ciprofloxacin will suffice. Also use more water and citrosoda mixed in a glass of water to make urine alkaline for protection against infection. We can t tell from these symptoms about pregnancy. But wait for about a few days and a pregnancy strip test will tell about pregnancy. For now don t worry. Hope that answer the question. Thanks