Have you been checked for the following:
1) Food Poisoning:
Consuming contaminated food or drinks can trigger rapid vomiting and diarrhea.
2) Bacterial or Parasitic Infections:
These infections can cause a range of symptoms, including nausea, vomiting, and diarrhea, and can be acquired through contaminated food or water.
3) Traveler's Diarrhea:
Exposure to unfamiliar bacteria or parasites while traveling can lead to diarrhea and other digestive issues.
4) Medication Side Effects:
Certain medications, particularly antibiotics, can disrupt the natural balance of bacteria in the intestines, leading to diarrhea
5) Lactose Intolerance:
Difficulty digesting lactose can cause gastrointestinal distress, including nausea, vomiting, and diarrhea.
6) Stress and Anxiety:
Strong emotions can affect the digestive system, leading to nausea, vomiting, or diarrhea.
7) Food Allergies:
Allergic reactions to certain foods can cause a range of symptoms, including nausea, vomiting, and diarrhea.
8) Appendicitis:
Inflammation of the appendix can cause severe abdominal pain and nausea, often accompanied by vomiting and diarrhea.
9) Kidney Stones:
Kidney stones can cause severe pain and nausea, and in some cases, vomiting and diarrhea.
10) Inflammatory Bowel Disease (IBD):
Conditions like Crohn's disease and ulcerative colitis can cause chronic inflammation of the digestive tract, leading to diarrhea and other symptoms.

If you smoke marijuana like I do they are making studies that are associating that as well.

Sorry you’re having such a terrible time. Thank you for sharing. Have you tried the brat diet, I’m sure you have.

Know your issues get better for you

is it right after eating?