Hello dear,I understand your concern.Iam sorry for your condition.In my opinion the loose motions lead to fluid loss and dehydration.This dehydration leads to irritation of uterus leading to preterm pains and decreased amniotic fluid etc.But nothing to worry as they subside with apt treatment.I suggest you to see your consultant as you might need antiboitics in case of stomach infection.Take adequate fluids upto 3 litres per day and also electrol powder.Check for fetal movements.Compensate the fluid loss by excess intake of fluids.Avoid spicy and oily diet and prefer bland diet.Avoid outside foods.Relax. Best regards...Dr.Srilatha