Whatever anyone else says including your OH, always, always follow your own feelings, any worries straight to the vet!
When you are really close to your dog you just can 'feel' when something is wrong.
So so many times Oh has grumbled when I have picked up on something wrong with my dogs not nes. obvious to him(mainly cause of vet costs)
But I have NEVER been wrong yet!
Very good luck with Dennis !