Stomach Upset Waterystool. Suggest me.

Sir, I wish to inform you that I had a lunch organised by local caterer in my resident locality on March 24 ( Holi ) and by night, my stomach was not well. In the next morning (Mar 25), I had a vomiting after drinking water in which most the food came out. After that, I ate two bread slice and was feeling gastric problem. After that, I just had some liquids (Eno, Lemonade). Then, in the afternoon I had some Khicdi and after 2 hours or so, I again vomited. During night, I ate yogurt and Yakult. I also took LEVOFLOXACIN 500 and LCZ plus and Pan D in the night. I had little fever at night. After that, I have passed 7-8 watery stools from Mar 25 8:00pm to Mar 26 3:00pm. Still, I feel some time that I need to go to washroom and whenever I go, its watery stool. Also Sir, I ate Tori + Curd + Roti in the morning and again took Levofloxacin + Pan D. And, I ate Plain Curd rice in the noon. My stomach feels upset as of now and the gas is just moving here and there. Please suggest me.