Hello HIV infection if occurs patient develop these symptoms ( after primary infection in acute stage). Fever, pharyngitis, lymphadenopathy , headache /retro-orbital pain ( eyes ), arthralgia/myalgias, lethargy/malaise/anorexia/weight loss. nausea/vomiting/diarrhea. ERYTHEMATOUS MACULOPAPULAR RASH ( as you are having on the inner side of thigh), mucocutaneous ulceration ( ulcer on tongue and in mouth). Since you are also feeling pain in the vagina , this may be due to infection or vaginitis. In my opinion it is very difficult to say any thing without any physical examination , so consult a gynecologist and get his opinion . Also get in blood examination for VDRL ( for STD). At present you are not having HIV infection like symptoms , but I also advise , please get in nucleic acid amplification rapid PCR ( RNA) test for HIV confirmation. Hope this will help you.