I have been feeling strange in my throat and jaw, it feels like muscles spasm and sometimes gets worse after i laugh and talk for quite some time. This feeling comes and goes so atimes I dont feel anything at all. Sometimes the spasm spreads down my neck and I feel like saliva is stuck somewhere in my jaw and down one side of my throat, sometimes. I had a series of panic attacks 3 months ago which has significantly subsided, I also had a bout of GERD a few months ago which comes every now and then depending on what I eat. I also occasionally have soar throat though I havent had in over a month. One particular day, it felt like saliva was on one side of my jaw when I woke up in the morning, I noticed that particularly spot had swelled up, it hurt a little when i touched it. After a while the swelling seemed to move down my neck and it disappeared. Its a strange feeling and so need advice has to what to do, should I be worried?