I Am Trying To Decide If I Need To See

I am trying to decide if I need to see a doctor or not. I had a cold sore above my lip about a month ago. I put some peroxide on it to prevent it from getting infected. My top lip became chapped, then the corners of my mouth, then my lips, and yesterday morning I woke with swollen lips. They are chapped and burn, and lip balm has made it worse. Today I switched to Vaseline. Wondering if this is a virus, sun burn reaction, dehydration, or a combination, or something that needs attention.