I have one risk behavior by unprotect with a prostitute on Dec 12 last year, and next within 2-7 weeks show too many symptoms such as dry cough, low fever, night sweat, lose weight, muscle pain, lymph become bigger a little . And I have test HIV antibody for 7 times by 28days, 42days, 56days, 7odays, 91days, 93days and 96days in hosiptal or CDC,all of them are negative . because in china , lots of doctor thinks that 3 month is enought to test . but a few of doctor thinks need 6 month, so now I am very afraid and helpless. I don't know if the 3 month is enough or not and don't know if will be change as result after 6 month. pls give me some suggestion. Thank you in advance.