Hi Jean, welcome to the forum.
How high are your sugar levels? It's surprising how much high sugar levels do affect your whole sense of well being, ability to heal and general health, so you may be more prone to infection. If you get your levels right down, you will be a New Woman!
Sally
Well you can be more prone, especially if your sugar is high.
Do you test your blood sugar?
I would keep a food diary, test before eating and 2 hours after until you can work out what foods work best for you. Some people prefer low GI. I had LCHF recommended to me and that works brilliantly for me. Read http://www.dietdoctor.com
If your doc won't give you a meter the cheapest ione I've found is the sd code free which is £12 but must be bought on line. (http://www.homehealth-uk.com) The strips are about £5 for 50 if you buy 5 packs so £25 for 250 strips. The strips for the meters soldby boots and other chemists are about £25 for 50. You will need the promo code for the sd code free
Hope this helps!