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Keep in mind that throat pain can be a sure shot sign of any STD except HIV/AIDS as its symptoms do not show up so rapidly. Go to clinic and get tested. Most countries have free and anonymous testing clinics. STDs can spread through oral sex as well as anal sex so always practice safe sex. You can never be too safe and too careful. I am sure it is nothing major or life threatening…. Get to the clinic and ask questions from doctor and be honest about everything.