I was walking on the street and i bought a drink, exited the store and slipped, fell and landed on the back of my head. Some how i didnt get a concusion and didnt even feel dizzy just some pain for a minute or so, about 3 hours later i laid down to watch tv for a moment and i tryed to get up and i felt like my neck muscles were tense and it was hard getting up. I went to sleep and when i woke up this morning i felt like someone is holding my neck and really tense and one more thing i was brushing my teeth and found that my tonsils were also swollen? I am wondering what happened? are the symtoms related to the fall or am i sick?

I did not do any neck workout that day.