Hi there. Yesterday my lips were really dry so I kept licking them, particularly my bottom lip, and I felt the skin split on it but I put lip balm on them before and after. But this morning when I woke up I saw little yellow dots on my bottom lip. If I smile too hard or something they hurt, and my bottom lip throbs from time to time where the little dots are. I've put A&D ointment on my bottom lip to keep it from getting worse. Is it an infection? And if so how serious is it? How do I make it go away?