Sorry to hear of your health problems Kitty. From my own experience I have had great benefit from acupuncture. I have been visiting the same chap for about 15 years, only when I need him and he has worked wonders. You do need personal recomendations as not all acupuncturists are as effective.
I also have Yeo plain unsweetened yoghurt which I think says it is a Probiotic or similar. I dollop it on fruit nuts etc. It is the one in the green pot and totally addictive
I try and get out for a walk every day and take vitamin D.
All the above seem to keep me going, especially as I have Polymyalgia which affects my immune system.