###Human: My symptoms after intercourse threatns me even after having negative HIV result. Kindly help. ###Assistant: Hello. The HIV test uses a finger prick blood sample, with results given within 20 minutes, and is 99 % accurate at detecting any HIV exposure that may have occurred more than 12 weeks ago. However, it can potentially pick up HIV infection from as little as four weeks ago. There is nothing to worry nothing will happen, and please repeat your test after 12 weeks. If you want accurate results to get, it has done RNA PCR which will give actual results within 10days. Antigen detection like P24 gives best results with in two to four weeks. Probably your suffering from a simple viral upper respiratory infection. After 12 weeks, please consult your doctor he will examine and treat you accordingly.