oral sex and ulcer

Please help.  I gave another guy of unknown status fellatio for a short period of time,  not deep throat but mainly licking.  There was no ejaculation but there may have been pre-ejaculate.  I am scared because I had a mouth ulcer on my gums, and a very very small one on the tip of my tongue.  I will get tested, but, in the meantime, I can't stop worrying.

[uncertainty1981]

Go to a regular physician.  You never had the risk.  Haven't you read the millions of posting that are up in this pit?

[street379]

I am worried about the mouth ulcers as a possible port of entry.