i have a pain in the middle bottom of my throat when i pull my head up looking up. sometimes it feels like there is a lump in my throat and a lot of times when i swallow a pill it gets stuck there. I also have a lot of acid reflux. I take zantac 300 before going to bed, it seems to help my stomach but that thing in my throat just wont go away... I feel like i have a sore throat alot also... i am always extremely tired, my arms hurt, cant put them behind my back , lowe back pain and now my left knee bothers me. I had an ultra sound and a catscan of the thyroid but nothing was found... i am always anxious and get angry really quick..... i don't know what else to do, please help