Well you're situation sounds... tricky. But I've been exactly where you are just precisely one year ago - and now I'm here on the forum all and well.

There really does come a point where anything you put inside in your body works against you. But it's not impossible to fix!

That being said, FM (can I call you that?), I suggest you don't jump to the conclusion that starchy carbs = NO constipation. Starchy carbs make an addiction - it isn't until you really get yourself off it that you can feel a BIG difference. First I say you get off cheese and dairy, regardless of whether it feels ok or not. The reason for this is because I'm afraid it might be causing you damage that other foods can irritate (say, gluten) and that they could be a horrible combo.

And I wouldn't touch vegetables either. Believe me - a lot of them they aren't necessary! I would give you reasons, but I'm not spam up this post too much, haha.

Toss out the bread/gluten - it does nothing for you. Toss out most of the dairy - it can only help.

What does this mean?
This is entirely up to you, and can only help.

Bringing only the simplest foods to your body - means a whole lot less pain. I do this with: -butter (ghee though) -beef/poultry -eggs -perhaps a banana and -potato/starchy harmless food. That's a DAY of nothing but that, and I can say that 95% of the issues are gone for ALL of my sensitivities!

I care more for treating my sensitivities than I do for gaining weight. The reason lies in that you can be fat or skinny, it doesn't matter unless your feeling good and healthy.

Than you see what foods actually "tick you off" - you add back more.

Sites that you can totally get along with:
Paleonu.com (I love this one particularly for its easy integration)
and
Hyperlipid/High Fat Nutrition Blog