Lurcher/greyhound has been very sick in the night, she sleeps in a large crate and has been sick in it over night, no noise or whimpering so we didn't know 
I have cleaned everything up and bathed her but she is clearly not well.
She is moving really slowly (when she moves) curled up on the sofa looking extremely sorry for herself. She drank lots of water when she got up but then puked it up.
Has just been sick again yellowy foam (sorry!)
Stood perfectly still in the bath and even when i had finished drying her she just stood still for ages.
Is it something to just keep an eye on or does is sound more serious?
She is 11mths old and just finished her first season if that is relevant.
I have googled but most say sick is normal if otherwise well but she clearly isn't.
Thanks in advance