It is normal for a dog to go off their feed during their heat. Mine has it worse some times than others, and is fairly lethargic for 1-3 days. I don't change her food, but I do monitor her intake during that time. As she doesn't feel like doing as much, I do expect her to be eating less.
As for vomiting, a little yellow bile could be a normal occurance in the morning if a pup hasn't eaten since earlier the last evening. I would try to feed a bit later in the evening to prevent this or offer a small meal before bedtime.
I think changing your pup's diet so much may have worsened the problem... just offer her the normal food and quit the bisquits and yogurt. Once they start vomiting meals, it's good to give their tummies a rest and not offer any food for 4 -12 hours (vets will say 24 hours, but I think that is too long esp for some so small), and small amounts of water after fasting. It's okay to go to chicken and white rice (1:1), small amounts, and the broth in small amounts would be okay, but count that as water when looking at total intake.
For now, check her gums, pink is good, moist not sticky is good. If she's pale, offer her a small amount of nutrical (dime sized, smear it on her gums). If she's not lethargic, and is acting more normal than not, it is probably okay to wait for your regular vet to open.
But if she is lethargic and not acting right, this long since the onset of her heat, it may be best to get her to an ER Vet. I can't tell what's best in any case through discriptions given online. |