I had protected vaginal and oral sex with many prostitutes in Germany and the prostitution is legal here. I ensured each time that the condom did not break. I developed a throat with phlegm but no pain and a single mouth ulcer on the roof of my mouth but they disappeared In A week. Now I have some itching on my elbow and it's red with a bump. I can feel the bump when I touch it. I don't have any other symptoms. I am really worried. Is it hiv ?