It looks like side effects of consuming AUGMENTIN
You should stop taking AUGMENTIN now as you have already taken it for more than what is required.
Take yoghurt twice daily and start taking some probiotic
like DAROLAC sachets twice daily.
If nasea and vomiting
are bothering you,then you may take some proton pump
inhibitor like PANTOPROZOLE 40 mg once a day empty stomach in morning for 3 to 5 days.
Start taking steam inhalation twice a day to take care of flu and sinus congestion.