hi, everyone... just three days ago i was a healthy 28 yr old, until i noticed three knots on the side of my neck and one behind my ear... i have two knots on the right side of my neck about the size of a dime, a one small one, about the size of a pea behind my ear... there is only one on my left side of my neck about the size of a dime as well.... they are very painful when touched and the back of my head is very sore... what could this indicate?

pls. help...