What Does Sharp Pain In The Back Of Neck, Sore Throat With Swollen Tonsils Mean?

iam just recently getting over a cold i had a fever but not any more the thing is now when i lay my head down i start feeling sharp pains on the back of my neck on the sides i still have a sore throat my tonsild are still swollen a bit what is this headache it s only everytime i lay down and rest my head