Ok so I've been feeling weird. One minute I'm ok i feel great and the next im congested with a bunch of mucus in my nose and my throat feels sore and there is a lump on the right side of my neck. Now these symptoms last for about a week or so and go away and then come back. I get chills i feel cold i get heartburn and my face feels really hot. Please help me I don't know whats going on.