I went to check on my degu today as normal and noticed that it has a grouth on the side of its mouth (on the hinge of its mouth). This growth has appeared today and is about the size of a bobbly mole, it is a pinky colour but has a red patch in the centre of it. None of my previous degus have ever had anything like this. Would really like to know what i can do for her her or if it is in fact something that can be treated at all.

I think you should take your degu to a vet about this.