what is wrong with my rattie boys??

[britters]

Thursday i got home from the vet with my buddy Rocco, he has a tumor thats going to be removed this wednesday along with his goolies.
When i got home i put him in his house and went to see Ludo, and i heard him squeak. But its odd because, he's by himself right now since his brother passed away a few weeks ago. So i pick him up and set him in my lap, i start scratching him and petting him and i touch his tail and he squeaked so i picked him up and tried to examin his tail and another squeak. I have no idea what is wrong with him. He doesn't have anything heavy in his cage that could have fallen on his tail.
It seems like its right at the base of his tail/lower back/butt area. But the odd thing is when ever his tail brushes up agains something he squeaks. I've also noticed he's been licking the tip of his tail too, but i touched that and no squeak.
Does anyone know what could it be?

[Kendra]

It sounds like it could be a sprain.  Could he have fallen off a level rather than something falling on him? 

[lilspaz68]

It does sound like a sprain.  The nerves are probably tingling at the tip of his tail and thats where he will lick.  Just keep an eye on him.

[britters]

my internet has been down.
Ludo is doing better i think it was a sprain because he no longer squeaking.
thank you for your advice