Hello and thanks for researching this very important question!
Many pregnant dogs of all breeds do encounter this problem. I will tell you, there is usually NO damage to the pups, despite our distress! This is part of the reason to hold off breeding a female until her body is mature. Nausea can be a real problem if it occurs later on in the pregnancy, so observe closely the times of day that she Does have interest in food.
There are a number of things you can try (the amount of space left is really small in this size dog)...including frequent offerings of:
1) Freeze dried chicXXXXX XXXXXvers (available at most better pet stores)--good source of protein and iron in a really digestible form
2) Esbilac liquid puppy replacer (available at pet stores)--good source of vitamins and calories
3) Nutrical, or similar paste calorie supplement (available at better pet stores)...one inch three times daily now, then add 1 inch daily each week until delivery
4) You can ask the vet for a can of Hill's Prescription a/d, or Eukanuba Maximum Calorie--these prescription foods provide a lot of calories and nutrients in tiny portions
Please avoid too many high-calcium foods at this point...they have been implicated in eclampsia later on just before or after delivery (a calcium-blood-balance disorder that can be fatal).
Late term food aversion can bridge over into nausea post-delivery, so be sure to continue finding things she will eat for you now...have a good supply of these foods for her first few weeks of nursing, when her calorie needs begin to really increase! Begin using the cottage cheese and/or yogurt after delivery to provide calcium.
If you have any doubts about how she is doing medically, please have her examined by a veterinarian who is familiar with canine reproduction.
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