Your symptoms returning after stopping ofloxacin and ornidazole suggest either an incomplete clearance of a bacterial or parasitic infection, or antibiotic-induced gut flora imbalance (dysbiosis). Please do not self-medicate with more antibiotics, as this can worsen gut health. I highly recommend consulting your doctor for a stool test to identify the exact cause. For temporary relief, you may take a daily probiotic supplement to restore healthy gut bacteria and an over-the-counter antispasmodic (like dicyclomine) for abdominal cramps. Stay well-hydrated and follow a bland diet.