A.L.
Check out wellnessmama,com << good articles on there about going gluten free and the adverse affects of grains/sugar in general. which leads me to.. while you are cutting out gluten, perhaps you stepped up something else in its place such as sugar? I wonder because sometimes we trade something out to get more of another... kinda like when a person gives up cigarettes but starts making something else a habit.. maybe keep a journal to see what your daily patterns are. additionally, maybe you are consuming too much fruit. as natural as it is, too much of it can make a person gain.. especially with the more high glycemic choices such as Bananas...
either way, check out the website, I found it very helpful.. also, be sure and include exercise. to me, that is what works best... gotta get the body moving..
my best to you and yours