Oh Dexter....I have the same thing. Been getting the Depo shots for a year, and slowly things are getting better for me. I've put back on some weight (I was very skinny there for a while) and while I still have stinky mouth sometimes, my vet thinks I will be able to keep my pearly whites. I also "get" to have a lovely tasting anti-biotic along with my shot (10 days I suffer this indignity) called Antirobe. It helps when the red gums get especially tender.
Every session, I can go longer between shots and antibiotics, so I am getting better. Be patient and thank your mom for taking such good care of you.

Get well soon....



Percy Peapod and the Tribe of 6