Well, I follow a vegan diet which can pretty much be summed up at fruit, veg, nuts and legumes! There are some great vegan cookbooks out there, even if you only want to have a couple of meals a week animal product free. Your local library may stock some, which would save you having to buy anything. My favourite vegan recipe book is 'Vegan Cooking for One'. The meals are incredibly simple in it and easy to modify to your own tastes.
There are some terrific recipes on the following sites:Fat free vegan
. I particularly like the crustless mini tofu quiches. They taste a billion times better than they sound!The McDougall Program 12 day plan with recipes.
(This diet is high-carb low-fat and when I followed the book strictly for a few weeks I managed to gain weight. My results don't sound typical, though, and if you're not used to a vegan diet you should
lose weight. Or you may want to stick with only using the occasional recipe.)
If it's a gluten intolerance you're experiencing there is an article in VegFamily
about how to modify a vegan diet to be gluten free.
Good luck! I hope you feel better soon.