No need to have 02 or any other antibiotics as there is no active diarrhea and vomiting.
Next Steps
Drink lots of water(3 to 4 litres per day)
Avoid unhealthy and unhygienic food as you are out of station
Stick to vegetarian diet atleast till symptoms subside.
Health Tips
keep zenfloz oz,metronidazole,electral,Pantop with yourself
kindly consult further if dysentry(blood in stools) occurs!