I know this is an HIV/Aids but

.I had an encounter where the man did very brief oral sex on me. (like 6 seconds)

What is my chance of contracting any sort of STD from this experience?

I need someone quickly to help me!

Slim to None.

Oral sex has been reported to transmit HIV in only a FEW cases, and is generally dangerous ONLY to the giver not the reciever. Im not sure about other STDs, but if he had a cold sore, it is possible for you to contract Herpes, as it the herpes simplex virus that causes cold sores.

There IS an STD board here, they might be more help.

Good Luck.