You're doing really well! I have plantar fasciitis (a foot condition) so I had to give up jogging a while ago. I have a vegan diet, so I know how hard it can be to find good diet advice for vegetarians. I think the low GI diet you're on is terrific and should give you good results. My mum lost heaps of weight on low GI.
It's great that you're getting to the gym. At times when you can't get there you might want to consider a pedal exerciser. It's like an exercise bike, but you can use it while sitting in any chair and it's particularly suited to people who have injuries. You can use it for your arms as well as your legs. My advice would be to get a more solid one than the image below, though. I have one like the image below and unless you can somehow bolt it in place it keeps trying to get away from you! A heavier one would be less likely to slide away while you're pedalling.
I started a thread on low GI recipes
, but only posted two recipes because I got very busy.
I have two low GI vegetarian cookbooks. The one by Rose Elliott, 'Low-GI Vegetarian Cookbook', uses a lot of dairy, so it's not really appropriate for vegans but would be good if you like cheese. The other one, 'The New Glucose Revolution Low GI Vegetarian Cookbook', is more vegan and has a lot of general information about having a low GI vegetarian diet. I prefer the latter, but check both out on Amazon to read the index pages to see which recipes you prefer. I bought mine from bookdepository.co.uk as they don't charge for postage, unlike Amazon.
There are some online sites for low GI vegetarian recipes:All Recipes: Low GI + VegetarianThe GI Diet Guide: vegetarian recipesLow GI cooking: vegetarian recipes
Other than that, just try to remember lower GI alternatives for each of the regular things you eat. So instead of having white potatoes, have sweet potatoes. Substitute wholegrain bread for white bread. If you're going to have pasta or potatoes let them cool first and re-heat them. Cooling the starches changes their chemical composition to make them slightly lower GI.