Get started on the diet and a good SFS asap. Take Immodium daily as a preventative - it's perfectly safe as long as you get thoroughly checked out before getting a definite diagnosis.
Oh and try posting on the Eating For IBS forum with general q's and you'll get more answers.
Good luck! And yep, it does get better.
PS. You'll probably find either an anti-depressant or hypnosis good for the anxiety.
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Re: I'm new to the boards and new to IBS
And yep, it does get better. 
