Hello,
Since you are having profuse diarrhea and pain lower abdomen associated with
overactive bladder, you are suggested to visit ER and get admitted in a hospital. You need urgent medical aid with intravenous drip and antibiotic injections to prevent
dehydration, sudden drop of BP, blood glucose level and body
electrolyte imbalance. In the meantime, you can take anti diarrheals, PPIs, one SOS for relief. Take ORS or Electrol to prevent sodium-potassium depletion.
Such symptoms can be due to food poisoning,
food intolerance / allergy,
gastroenteritis, viral infection, lactulose intolerance, etc. You are recommended to get CBC, Urinalysis (R/E and C/S), Stool tests (R/E and C/S) done at the earliest. Get treated.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician