manage my IBS

I have been diagnosed with IBS, and in the past four weeks it’s been horrible!
Pretty much anything I eat makes me ill! So I’ve cut out/down on; wheat, dairy and tomato sauces (ie, no spag bol, no pizza, no lasagna!) but so far with no real improvement. It’s got to the point where I’m almost scared to eat in case I’m ill. It gets much worse with anxiety, making me almost a prisoner in my own home as I quite often need to be near a toilet!
This was a kind of rant, I’ll write something more constructive when I feel better.