Dear Expert, on June 30, I had a sexy exposure with a professional sex provider(girl), she gave me a oral sex to my penis for about 3 minutes without condom and also used her tongue to lick my anus for 1 minutes. After two days later, I was into a big fear. during this period, my weight lost 4kg, headache, fever etc, many symptoms. 4 weeks later, I went to hospical to do HIV and Syphilis tests and both of them are negative. Please can you tell me whether this results are meaningful or not? how risky do I have to catch HIV?
Many thanks,