Ok... I'm really kind of starting to freak out... I have a huge knot on the back lower, left part of my neck... doctor told me to come back in 2 weeks to see maybe if they know what it is... and they put me on some kind of medicine... well I was setting here just now... and I feel another knot on the left, front side of my neck... if anyone has any idea what either one might be please let me know!! Appreciate it!! ASAP!