I had protected sexual intercourse with sex worker. But I had small wound on my finger .i am not sure that finger touched or not to the vaginal fluid .but I did hiv pcr rna qualitative and hiv pcr ena test quantitative test on 23 rd day from thyrocare all are negative. But still I have doubt again I tested hiv1 and 2 elisa test on 29 day .it too negative. I had mouth ulcer which was gone and also now my tongue became red due to I have problem to eat food. Why is this happening to me? Is they are symptom of hiv or other?