I received an oral sex from a girl after that later in the evening my penis was itching and there was small redness on my penis. Six days later I had a mouth ulcer on my lip and bumps on the back of my tongue. I was so anxious and stressed I couldn't sleep for weeks I keep checking for symptoms of ST , HIV. Also later after weeks gone by I experience night sweats and colds during night. What are the risk of getting HIV through oral sex ?