Why can't I "digest" cucumbers?

I’ve heard that some people don’t tolerate cucumbers well, and that it is caused by the darker green area under the skin. I thought that cutting away that part of the cuke was supposed to alleviate the issue.
I happen to love cucumbers, but they don’t love me. I had maybe 4, deeply skinned, cucumber slices on my salad 12 hours ago… and I am still burping it up. Hey, if you were expecting delicate and ladylike, I don’t know why you’re looking at me. Happens every time I eat them, it’s like they won’t go away. Pickles almost never give me a problem, it just seems to be plain, raw cucumber… and it doesn’t matter if I buy regular cukes or the thin, seedless variety.

What gives?