Don't feel like a wimp. It's difficult to deal with digestive issues. And it's especially disheartening when you feel better for a while and then the old symptoms reappear. That happens to me with my IBS. I can feel good for weeks, sometimes even months; then out of the blue I start feeling poorly. It can be depressing.
As Gail said, it may just be something you ate or stress. Since I retired, I have a lot less stress in my life which has helped my condition.
Try not to worry, and I hope you feel better.
Diagnosed with: seizure disorder in 1962; seizure-free since 1969, IBS in 1996,
Mild depression, anxiety, & OCD in 2000, PMDD in 2001, Dysfunctional tear syndrome in 2009
Meds: Phenobarbitol, Paxil, Allegra; Supplements: Too many to list here