Thanks for consulting at my virtual clinic. I have carefully worked through your case, and I can realize your health worries. Being your physician, I assure you not to worry as I will take care all of your medical concerns. sporilac contains spore of good bacteria which will fight of the bad bacteria that can cause loose stools. loose stools can be cause by either bacterial, viral, protozoa, fungal infection. only bacterial infection responds to antibiotics. 5 days of antibiotics treatment will be sufficient. even you can stop sporolac. breast feed your baby frequently. see for any signs of dehydration like dry lips or tongue. if dehydration is there consult a near by doctor your baby might need intra-venous fluids. you can give oral re-hydration syrup one to two t-spoon every 10 -15 minutes. do not give more than what the baby can consume as the baby might vomit. this will itself solidify the stool. Hope it helps. If you need further, detailed and quick assistance related to any health issues in future, feel free to ask me a question directly from my profile. Have a wonderful time ahead. Best Regards! Dr. Arunmozhi varman