Thank you again,
Based on what you have told me, she sounds painful and hunched in her abdomen. If she ate some of the grass with this mystery spray that could cause what we are seeing. And without knowing what it was, we just don't know how much damage it could do. Otherwise, we'd have to be wary of pancreatitis, severe gastroenteritis, stomach ulcers, gut traumatizing foreign bodies or plants, or possible gut twists (usually they will have pale gums or bloating).
With this in mind and how sore she is, it would be ideal to have her seen by her vet now for injectable gut safe pain relief. That way they can get her comfortable as they determine which issue is present and needs to be addressed.
If there is any delay in having her seen, you could at least to try to soothe her stomach to reduce the pain of some of these conditions. To do so, you can consider treating her with an antacid. Common pet safe OTC ones we can use include Pepcid (More Info/Dose @http://www.petplace.com/article/drug-library/library/over-the-counter/famotidine-pepcid), Zantac (More Info/Dose @ http://www.petplace.com/article/drug-library/library/over-the-counter/ranitidine-hcl-zantac), or Tagamet (More Info/Dose Here @ http://www.petplace.com/article/drug-library/library/over-the-counter/cimetidine-hcl-tagamet). Whichever you choose, we’d give this 20 minutes before offering food to allow absorption. Of course, do check with her vet before use if she has any known health issues or is on any medications you didn’t mention.
Once that has had time to absorb and she is steadier on her stomach, you can consider starting her on a light/easily digestible diet. Start with a small volume (a spoonful). Examples you can use are cooked white rice with boiled chicken, boiled white fish, cottage cheese, scrambled eggs, or meat baby food (as long as its garlic/onion free). There are also OTC vet diets that can be used (ie Hill’s I/D or Royal Canin’s sensitivity) too. When you offer that spoonful, give her 30 minutes to settle. If she keeps the food down, you can give a bit more and so on. As her stomach stabilizes, you can offer more. The aim of these diets is that they will be better tolerated/absorbed by the compromised gut. Therefore, it should get more nutrients in and result in less GI upset (as well as coat the stomach a bit from those caustic and traumatic concerns). As long as improvement is being seen, I usually advise that the diet be continued until her signs are settled, and that they are then slowly weaned back to their normal diet.
Overall, a wide range of agents could trigger the signs we are seeing. Therefore, we need to tread with care. Since she is demonstrating overt pain, we'd be best to have her seen now since there are no safe OTC pain relief options for a case like this. Otherwise, you can try the above while monitoring closely. Though if she doesn't settle within a few hours, we'd want to get her vet involved. They can assess her hydration, rmake sure there is nothing in her stomach that shouldn't be there or any sinister viruses present. Depending on their findings, her vet can treat her with injectable pain relief +/- anti-nausea medication or antibiotics to settle her stomach, and get her back feeling like herself.
Please take care,
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