Hello I'm a 28 years old male, I had PROTECTED sex with a prostitute female in the 8th of Jan 2007, after that I got worried and I tested for HIV after one week, and because I know the period is not enough to get an accurate test result, I tested again after 1 Month, and then tested after 5 months 10 days, and then I recently took another test (after 1 year 7 months). All of the 4 results came out negative. Do I need to be worried after all that. Please help I'm married now and I'm being worried about my wife.