Dear Vinay, hello.
Frequent eating in unhygeinic condition can result in colitis
. You are taking correct medication which covers both the above condition. You can add probiotic
combination. This will also be of some help. If the problem is persisting, have a investigation of your stool done.
Take the antibiotic medication for 5 - 7 days.
Always take precaution while eating outside. Atleast try taking pure filtered water with you whenever you go outside.
Hope this is helpful.