Do I have an STI that has been orally transmitted?

[jones123]

At the weekend I performed oral sex on a female without the use of a dental dam. All was fine and nothing appeared to be wrong with her "area" but I now have an ulcer and a sore throat.

Is it possible that I have managed to catch an STI through performing oral sex on her? And would it show up this quickly (4 days afterwards)?

[winnminny]

U can check at sti clinic they will swab in ur throat b4,may be tonsilitis or sti.