I need help πŸ˜–πŸ˜­

So I've never actually kissed anyone before, but last night kinda got wild and dares were made. But it was pure fooling around in town. But out of no where, my friend kissed me. It wasn't an all encompassing makeout session, it was a peck.
And I just now discover a bump on the bottom corner of my lip! And I'm freaking out 😨 I don't know what it is but it kinda stings, but barley...