There's this weird white thing inside my mouth, close to where my lower lip is, I've had it for a few days now. Its like a big white looking bump. There's a second one but its way smaller and pale looking. I've only been kissing one person which is my S/O and I'm pretty sure that he doesn't have any oral problems. I believe this has happened before a few months ago. Is it possibly a sign of herpes?? If not, what could it be??