On 20 th Aug of this year I received oral sex{blowjob} from an unknown boy of 20 years old for maximum of 10 minutes .I have no cuts, injury on my pennis. I also checked his mouth he had no cuts, sores,ulcers, bleeding gums in his mouth .from past 4 days my pennis tip is hot after urinating .is I am infected with hiv? This is fatal one .incident. Which tests should I undergo on which days .is this std? Which std tests should I underwent? Please please give me detailed answer.