Recommend talking with your LLMD about this. C-diff is not always caught on the first try (i.e., may take more than one test to rule it out), but I hesitate to say that is for sure what you are dealing with, given how well it cleared off the abx (C-diff doesn't usually clear immediately upon stopping the abx). Could be yeast-related diarrhea, could be die-off from the abx, or something else entirely. Did your diet change while you were on vacation? If so, what was different? Just some things to think about that may lead you to an answer...good luck,
Chronic Lyme Disease, Chronic Bartonella (clinical dx only), Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, chronic Lymphopenia, etc.; G-Tube; Currently weaning off TPN.
Meds: Pulmicort, IV Doxycycline, Heparin (to flush PICC line), Claritin, Singulair, Domperidone, Colloidal Silver (topically & nasally), probiotics, Liver support herbs, Ailanthus, digestive enzymes, homeopathy.