Could this be oral herpes??

About a month ago i kissed a fair few girls and gave oral sex to a girl in a night.
Now I've got 3 ulcers on the inside of my month (right next to my lips)

I get ulcers reasonably often, but never 3 at once.
These ulcers aren't cold sores.
But I'm pretty sure that they're canker ulcers that i normally get.

Does oral herpes cause canker ulcers??

Thanks.

[gracefromHHP]

Irritation/friction from performing oral sex can trigger canker sores.  No real reason to suspect anything else just from some kissing and performing oral sex on someone once.

grace