very sad news.

last night before i went to bed my dog yelped as my dad was picking him up. we thought it was a muscle cramp and massaged him. then it happened again an hour later so we massaged him again.
this morning he kept yelping after he would get up from resting.so i know its not a muscle cramp.
im taking him to the vets office today to se whats really wrong with him but i think i already know
its bone cancer.
i know bone cancer happens to mainly larger dogs and my dog is a small dog but im almost sure thats what it is.
im very upset that i know most likely we will have to put him down.

he is 11 year old dachshund and i got him when i was in 3rd grade and now im in 12th grade! I hope im wrong and its only a sprain.