Could recent antibiotics cause my chronic diarrhea?

Yes. Antibiotics commonly disrupt gut bacteria and can cause immediate antibiotic-associated diarrhea; a small but important subset of patients develop C. difficile infection (particularly after recent healthcare exposure or prolonged antibiotics). If diarrhea started after antibiotic use, tell your doctor — stool testing for C. difficile and targeted treatment may be needed. The CDC has clear guidance on diagnosis and management.