The diarrhea is gone and her poops are back to normal. It must be something like Cecal dysbiosis. The gut might be experiencing an over production of bad bacteria (which I suspect must be because of eating of soiled chaff).

@Roberta : Since the past few months, she has been becoming a picky eater..There was this pellets she used to gobble, but now doesnt like to have it anymore. A few minutes back, I gave her pumpkin puree + chopped basil + ground hay. I was not preferring to give her any vegetable..but she isnt having hay AT ANY COST. I have my final semester exam 2 days later and she’s driving me nuts. And this is the same hay that she was gobbling on Friday night.. I wonder if its the hay or its her. This pack of hay is the greenest, freshest hay that I have ever got her. She is habitual to getting lots of veggies. 3-4 cups per day. I did not give her any vegetable or pellet in the hope that she will have her hay out of hunger.. She’s eating her wood toy..she’s eating threads of the bed sheet, but no, not her hay…I dont know how to make her eat more hay..
Because her poops are getting back to normal. I decided to omit Baytril. I shouldnt act as the doctor right now but two antibiotics at the same time sounded a little harsh. She’s been on Baytril during UTI and I never saw any problems in her poop. But I’ll omit it for now and continue to give her Metronidazole.

@AndHenry : Suspensions are so much easier.. *sigh* What I did during her UTI days were sprinkle some on a chunk of fruit.. However, she’d smell it and give me those “I know what you are doing” looks and throw it away. So what I used to do next was…keep her hungry for 2-3 hours..not feed her anything in that duration and then give that medicine filled piece of fruit. She’d smell and give me disapproving looks but..will have it.

@Sarita : Dont have another option. Cant give her fruits everyday when her gut’s going sensitive. I omitted Baytril for now and rest two are suspensions. So its okay for now. The veggies are not really the cause of the problem, but I am afraid to give her any for sometime.

@Tobyluv : Well, she didnt really tried to find out the cause..just gave the medicines. I suggested her the cause and she said “it could be that.” . Bene-bac is around Rs.4000 here. Most of the vet stuff we get here is imported..I am not surprised its that costly.
I have this : http://www.itspets.com/vitamins-supplements/890-anima-strathanima-strathherbal-yeast-food-supplement-for-all-animals.html
Its a yeast supplement. Will this be beneficial for now ?

@Beebun and Little Lion Head : Thanks to both of you I am going nuts with my end semester exam just two days from now (I am a slacker student with attention problems that I have developed recently..have not studied anything).. Just hope that she has her hay.. If she does that.. the problem will be solved to quite an extent.

Also..The vet gave Practin (cyproheptadine hcl). Its an appetite stimulant. The vet said, complete the 5 day dose of antibiotics THEN give her this appetite stimulant. I dont know why she said that. Any of your buns’ been on antibiotic and appetite stimulant at the same time ?

No, both were given for the diarrhea. There is no more of it. Just her normal poops. But she isnt having hay in any form.