I'm diabetic too (Type 1)!! I think there should be health warnings on mouth wash, especially if you have diabetes. The idea is great, but your body does need the good bateria too. Thrush is a pain when you are diabetic, especially when female (I'm sure you can understand what I mean

)!!
The fact that you seemed to improve with natural probiotics does point to thrush. Hope leaving out the mouth wash helps!
Emma.