Christina...I have regular bouts with Irritable Bowel Syndrome...if that is what you are referring to as IBS. It started in my 20's and I'm age 57 now. I still have it recurring. At one time, my doctor gave me prescription for this, which helped somewhat. It is Dicyclomine, and though I still have some of this med, I rarely take it.
I do think this is stress induced, and I can have an attack at any time. These bouts used to leave me feeling like I was going to faint, turning white and sweating profusely, vomiting and having painful bout on the commode, and still do occasionally. Mostly now, though, it is something I just weather thru. The prescription med does help, if you really need it!
Patty