Welcome to the IBS forum!
I think the biggest change for most of us would be our diet.... It was for me anyway. I eat healthier now. Also, the anti-social behavior. That really sucks. Sometimes I just can't seem to get myself to commit to going out. I'm afraid I'll have an attack while out. Don't get me wrong, I'm not a hermit. I just don't like to take long trips where I'm stuck. I like to drive myself so I'm able to leave if I have to.
Have your docs given you anything to try and control the D? Are you on probiotics or vitamins? Calcium is great for controling D. You may want to give that a whirl.
In the meantime, before your scopes, try to eat healthy. Stay away from fatty foods and probably raw fruits and veggies too (those are hard on the gut).
I'm sure others will be around soon to give some input.
Take care and HAPPY early BIRTHDAY!!!
Co-Moderator for the IBS Forum