I'm sorry to hear you have recently been diagnosed with IBS. I wouldn't wish this upon anybody :(
I've suffered for many years now. Alot of information and advise I've picked up over the years has been at times quite conflicting. But the more I learn, the more I realise everyone is different, with many different triggers, reactions etc.
If you are able I would recommend you maybe look in to getting some food intolerance and allergy tests done. I recently started to suffer from my worst bout to date .. and at my wits end I finally decided to get some indepth testing done and how glad I am that I did! Although the results were astounding to say the least, it looks possible that many foods I was eating were making me so much worse. Even some things that are recommended for the treatment of Ibs! Time will tell of course if I have indeed found the primary source of my ongoing nightmare with Ibs. But after a week of cutting out everything I have a high allergic reaction too (even toothpaste!) I am feeling much much better than I have in a long time. No more pain, cramps, erratic and frightening alternating BM's. The over night change in me has been amazing. Now just hoping and praying I can stay this way ... and find some foods that are safe for me to eat before I waste away to nothing.
Looking back with hindsight I would now recommend anyone to get tests done as early on as possible. If only to rule out any problematic foods first up. I plan to get the tests redone on a yearly basis to try and keep on top of this.
I hope things soon begin to look a little more positive for you. Keep hanging on in there & the best of luck : )