i had relation with a girl before 10 months , i test for HIV in 9 months it shows negative, but before few days i had ate food out side and suffered from headache, nausea , vomit for a single day and my muscles are paining is it due to food poisoning or HIV, my skin is itching now, after i read the sings of HIV , it feels like it's hurting 2 inch below my armpit. I'm so worried, now it feels sore throat too