I Have Also Been Diagnosed With IBS Mine Is Worse When Im Stressed But I Am Kinda Learning To Get Used To It Now.. Your Sounds LOTS Worse Than Mine And Massive Sympathy Too You, Must Be Awfull
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This May Sound Simple And Im Sure Uve Tried It But I Found Peppermint Tea Really Helped With Mine, Especially After Eating.. May Be Worth A Try If You Havent Tried It!!
I Found Reflexology Made A Difference To Mine, Not A Huge Difference But Then Mines Not As Bad As Yours So You May Find It Helpfull Mite Be Worth Giving It Ago
Good Luck And Hope You Find Something That Works For You
Cat