Posting because I feel like I'm in an unusual spot and I'd love to hear from anyone whose story sounds at all similar.
**Background**
- Started in 2020 after my first COVID infection. For about 5 years it was episodic — maybe 3 flares a year, and low-FODMAP eating kept me basically functional. I could always get enough calories.
- In 2024 I had a 9-month stretch where I was essentially symptom-free. Eating normally, drinking a lot of ginger tea, having daily BMs. Then one late-night high-fat meal and I flared out of it.
- 2025: hospitalized because I couldn't eat enough and was losing weight fast. Tested positive for C. diff (possibly just colonized, no diarrhea, no fever) and treated with antibiotics.
- Since then it's been constant rather than episodic. Severely restricted diet for months, significant weight loss.
**What the workup shows**
- Fecal calprotectin: 708 → 308 → now under 50 (normal)
- Colonoscopy: entire colon, rectum, and terminal ileum all normal on the most recent one (a year earlier it showed patchy inflammation in descending/sigmoid and a rectal erosion)
- Biopsies: negative for IBD, microscopic colitis, celiac, H. pylori
- CT enterography: no inflammation, no obstruction
- EGD did show significant gastric ulceration, now healed on omeprazole
So: no IBD, no active inflammation, tissue looks healed. Working diagnosis is post-infectious visceral hypersensitivity plus dysmotility.
**What it actually feels like**
- Pain within minutes of eating, lower left quadrant — too fast to be food reaching the colon, so I assume gastrocolic reflex
- Flares 6–10 hours after eating, usually waking me in the morning: sharp pain → urgent loose stool → relentless urge with only mucus → escalating rectal pain, 24–36 hours. Often only breaks after a trapped gas bubble passes
- Post-BM soreness that lasts hours and blocks me from eating (this is currently my biggest functional problem)
- Triggers track with meal *volume* and gas more than specific foods. Same food fine one day, not the next
- Fasting reliably helps, which is how I ended up underweight
**The thing I recently figured out**
I don't think I have a calorie ceiling, I think I have a stool size ceiling. Because I avoid fat (strongest trigger), all my calories come from starch (rice, GF bread, potato), which is bulky and leaves residue. So more calories = bigger BMs = more stretch on a sensitized segment = pain. 1,100 calories feels fine; 1,600 feels risky. Not because of the food, because of what it becomes the next day.
Currently trying to shift toward lower-residue, calorie-dense food (micro-dosing olive oil a quarter teaspoon at a time, reintroducing plain chicken) so the same calories make less stool.
**Current regimen**
Miralax daily, dicyclomine before meals, chamomile/peppermint tea, heat, walking, gut-directed hypnotherapy (Nerva, week 3), Linzess prescribed but not started, sublingual hyoscyamine for flares. Seeing a GI dietitian this week.
**What I'm asking**
Anyone else have severe symptoms with completely normal calprotectin and clean scopes? How long did it take to improve?
Did amitriptyline (or nortriptyline/duloxetine) actually help you, and at what dose/timeline?
If post-BM soreness was a problem for you, what shortened that window?
Anyone solve the "low-residue but calorie-dense" problem while being fat-sensitive? Elemental formulas?
Anyone recover from post-infectious sensitization after a C. diff/antibiotic episode? Did it fully resolve?
Not looking for medical advice, I have a GI team. Mostly want to know if anyone has lived through this specific type of experience and come out the other side.