If the condom actually broke, you were right to test. If it was a slip, you didn't need to. If the other person tested negative at 28 days when you tested, then you could not get hiv from him. The entire episode at WORST case scenario was less than 1 percent risk and you tested negative at 28 days. You are over worrying. Do you see that? Get help for anxiety so you can have a normal sex life. Your test result will not change after 28 days. You are negative.