I recently developed a canker sore i do get them every so often.i also have a sore throat i've recently had unprotected sex with a male. i'm worried about hiv. i had the rna test 9 day post-exp and it was negative. could this still be signs of hiv?

Not necessarily: Canker sores do tend to happen with reduced immunity and it can be a common part of any other viral infection as well. HIV testing needs to be repeated at 3 months as it has a window period before it can be considered a true negative test. It is ideal if you get throat and mouth swabs to rule out other possibilities such as gonorrhoea and herpes

Probably not HIV: Don't assume HIV just because you have some symptoms that go long with it. Same symptoms in many other conditions, mostly minor, and the large majority of people with symptoms like yours don't have HIV. Negative RNA test is around 50-60% conclusive at 9 days; have another at 12-15 d and Ag/Ab (4th generation) test at 4 weeks. Probably also negative, but better safe than sorry.

Unlikely: Better still don't have unprotected sex again. Your long-term safety is very important