My old bob-dog is having problems breathing

. She seemed to have a hard time breathing this morning, but when I got home from work, she was fine. Then I went out for dinner with a friend, and when I got home she was gasping for breath, literally. She has to suck in big gulps her air. Then she'll be okay for a five or so minutes, then have a hard time breathing again.
She seems fine otherwise, eyes bright, tail wagging, ect.
I really can't afford to bring her into the vets at night. An emergency call at 11:30 at night will cost be $600 just to get them to come to the clinic. Add another $150 for diagnosis [she can't breath duh] and then $$$ for end product. I think I'm going to have to get her euthanized. She's been having a hard time this fall. She's old, I don't want her to suffocate to death......
So I won't sleep tonight....and sit and listen to my poor bob-dog....And tomorrow morning I'll bring her to the vets.....
