I got the same thing, had a minor attack just 2 days ago after 2 years without one. I'm not sure I buy the seeds and nuts advice. My brother also has it (and 2 sisters and Mother) and he eats nuts literally every day. I eat a lot of cucumbers and tomatoes as my harvest comes in, which started a month ago.
However, one of my docs said try a small amount and see if you if feel ok. I would try again if I were you and see, but I know what you mean - I was in the hospital once for it. The doc thought the cat scan or x ray or whatever it was showed a ruptured intestine. Thankfully it was a false alarm.
BTW, my experience has been if as soon as I feel it coming on, I stop eating solid food and drink *lots* of water, it clears itself.