Started With Greenish Solid Bowel Movement Accompanied With Stomach Cramps..

Started with greenish solid bowel movement accompanied with stomach cramps.. Within last two hours as went to diarrhea with little solid... now having chills and lower back pain... I just ate a corn dog now my stomach is making all sorts of sounds... But I was recently on an antibiotic amoxicillin for tooth removal.. I was taking probiotics with antibiotics but stopped after I finished the antibiotic.. could this be a stomach virus or from antibiotics removing all the bacteria from my gut??