it could just be some irritation... the skin on the inside of your lip probably got rubbed raw, and people's mouths tend to be full of bacteria... put the two together, and youve got a prime situation for a mild infection or irritation. it'll probably go away on it's own. if not, tell the doctor your symptoms and they can hopefully help. I personally think you're worried for no reason, but of course, I'm not a doctor. if you want to get tested to be sure, go for it. a test for herpes is best if you still have the bumps, so they can take a culture of the sores, but if not, then you can get a blood test.