1. I had sex with a female sex worker on August 26. I just found that the condom was broken and stayed in her body for less than 5s. Is this a high-risk behavior? 2. Out of panic, I immediately took the blocking drug and then consulted the doctor. He thought there was no risk. I stopped the drug 5 days after taking the drug, that is, on September 1, and went to the hospital in October to test the third generation of hiv. It showed negative. Can I rule it now? If not, how long will it take to test? 3. From September to October, there are many symptoms, such as dizziness, photophobia, panic, fever in the face and ears, but normal body temperature, body itching, acne, cold, and some of the symptoms have not been completely recovered. Are these caused by hiv? Thank you for your help.