Well, we heard from the Vet who's treating Sammy and right now he's leaning very much towards either IMHA (Immune-mediated Hemolytic Anemia) or a Lymphoma.
We should have a answer tomorrow morning after more results come back in.
For now, they have ruled out Pyometra, GI ulcers & anything Toxic.
Will update tomorrow as I hear anything.
Thank you for those who've shared with me today!
Hugs to all of you!