Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today.
How long has she has these signs?
Did they start after the pain killer and antihistamine? Which ones did you use, what dose, and what is her weight?
Any gagging, retching, lip licking, drooling or vomiting?
Are her gums pink or pale/white? Moist or sticky?
If you press on her belly, any discomfort, tenderness, or tensing?
Could she have eaten something she should not have (ie bones, toys, plants, chemicals, etc)?