Hello I sex with a boy and dont know he is hiv or not . After 5 days of exposure i also eat icecream and drink cold water . Then i feel sorethroat and low temperature fever . Fever last only for a one night and sorethroat for two days only But after throat ends both sides of my neck lymp nodes swell and now after one month i feel little bit low swelling in neck . Is this due to sex or cold ? No other symptoms of hiv i feel during tjis time period of one month One more thing i just read in sone of the site that 0.11 hiv is non reactive and per act exposure leads to 0.11 then why some people said that one time sex leads to hiv Is it correct or not