Had unprotected oral sex with an ex of mine, said he was tested he thinks 5 months ago and was clean, but it doesn't take the doubts out of my head. He came in my mouth, not much semen and i spitted out nearly straight away. Thing is afterwards i noticed a red sore around my top tooth and awhile later i noticed the gums in top of my mouth were badly swollen so could have been slightly swollen at the time. It's been 3 months now and i am waiting on test results (1st set of bloods got damaged in transit, which meant going true the whole testing process again which doesn't help my nerves) what do you think are the chances of having got hiv from this one possible exposure?