dog problems

my dog cassie has been acting weird. like shes been shaking, yelping randomly, we think she might be in labor but we are not sure??? can anyone help me please i want to know ASAP i don't want her to hurt!

My friends 13 year old spaniel recently started to wet indoors of a night ,she mentioned it to the vet and they said it was his age .This dog usually walks roughly 3 miles twice a day ,but has started to refuse to go more than half a mile, this week he has been leaving most of his dinner as well...