iron problem

can please someone give me an advice:
when I started the candida diet, I ate a lot of brokkoli, spinach, red beat, etc. and did fine on it. Now when I eat it I get a lot of gas and it smells awful. I remember, that I had the same effect when I took too many iron tablets some month ago. So I guess my body has a problem with absorbing iron. It can´t be too much though, because I stopped eating all mentioned above. Is there some supplement that helps absorbing iron, or did my stomach turn allergic to it because of the candida? But how does this function???

thanks in advance for help

E.E.