My lips are burning/tingling after having oral sex, What could I have?

I was giving a girl oral sex last night (mutual) and this morning, about 11 hours later, my lips but more so the left side of my bottom lip began to have a burning, tingling, and maybe a little swollen sensation when I woke up the next morning. The symptoms are still going. However, the girl I gave oral to (and got oral from) was tested for everything (HIV+STDs including Herpes) a couple of weeks ago and she was fine. Plus, she hasn't slept with another guy since the last time she got tested, just kissed a guy but it was a really good friend of hers and he was clean too. I know people usually have burning/tingling lips as the pre-stage symptoms to HSV (herpes) but because I know she was tested, I think it may be something else. I've looked online and have learned that other causes may include sleep deprivation, fever, and allergies. And a nurse I spoke to this morning said there are millions of causes and HSV symptoms do not usually show the day after exposure. Has anyone (guys especially) had the same experiences or does anyone have any ideas on what is wrong with my lips? Thanks.