Been a long time since I've been on here but thought I would write a quick update.
Recently, I have given my life some structure around school and other things and have stabilized my IBS.
I believe the great cure is no anxiety, certain medication, lifestyle changes and an easy, laid-back life.
I have noticed that I either go to the bathroom either once or twice a day (which is considered very normal). Either in the morning (a bit sloppy, but no diarrhea) or after school (usually whole but easily passable). One thing I do is each morning take 1 buscopan tablet and have a cup of peppermint tea. Then the pain will slowly ease throughout the day, by lunchtime be mild discomfort and gone in evening.
Then during the day, I avoid the two big things: onion and garlic but other than that I eat mostly what I used to (no ready meals though). My doc does have very mild IBS so she understands and she has never seen a case where eating a specific thing causes issues.
One thing which really helps isn't drinking after about 10pm and not eating after 9pm I find. I don't get why not drinking after late helps but it does for me. Also, if you're going to drink alcohol, try not carbonated, so now 18 I drink guinness or stir all the fizz out of anything before drinking.
Being anxious is my big trouble, for example when I was on an early morning flight and a 1.5 hour journey to airport that made it very painful and had one loose bowel movement in airport.
Feel free to add anything to this or post your thoughts
All the best to everyone.