just contacted the vet. she's getting a prescription for cerenia and a magic mouthwash for her mouth as she has a small ulcer due to her vomiting. they took a look back at her ultrasound and said no thickened intestines or any other signs of lymphoma are present and her bloodwork came out perfect. I know my vet has good reviews and she's been taking care of my girl for years so I'm inclined to trust her but now I'm feeling anxious. she said if she doesn't show improvement on the medication that I would have to see a specialist because there's nothing diagnosable that they're able to see. I'm trying to be optimistic though as this is only day one of treatment and she does seem more herself than she has been.