Hello, welcome to HCM, I am Dr. Das
Firstly, when you knew that you have a risk of getting infected with
HIV, you would be better to consult a physician. Because, If you had taken the prophylactic agents , then you would have low chance of getting infected.
Now, HIV is a virus that can persist in your body without any sign of its presence for even upto 10 yrs. No result between this period is definite or guaranteed. But clinically, 6 month is taken as a cut off time. If these test are negative after 6 months, then there is little chance of this infection.
So, till 6 months, no test is conclusive.
Hope this information suffices.
Regards.