Hernia after spayed?

I’m sorry to hear your dog has not been feeling well! Yes, it is likely that she could have a minor hernia, but it is a good sign that she does not appear to be in pain at the site of the hernia, but it could also just be a small lump from inflammation & healing post-op, but it’s important to be able to distinguish between the two. Hernia’s can occur for a multitude of reasons after a dog being spayed, and could have occurred if it has been difficult for her to stay resting, or if she for some reason is not healing properly. She could have torn some internal sutures, and it is likely that it is a hernia if it is soft to the touch and/or change in shape or size. For now, as long as your dog is not vomiting after eating that is a good sign, and may be a result of nausea from either hunger in the morning or the inflammation in that region from the healing process. However, if your dog begins vomiting more and displays any other symptoms such as not eating, drooling, or shortness of breath, you will want to take your dog to the vet for a X-Ray or CT scan to determine if there is a hernia, and if so what your options are for treatment. Hope this helps & I hope your fur-baby feels better soon!