It takes about 6 months for the virus to show itself in the system so if it's been less than 6 months, the test will be innacurate. There are some companies that sell at home kits. Just google HIV at home kit. I found one here for you: http://www.homeaccess.com/HIV_Test_Overview.htm

I don't know how reliable they are. I only saw them advertised on the news.