Nurse prescribed 10 days of Cefdinir, had terrible drug reaction, how can I stop this?

59 yr male, had my first ever sinus infection, doc on vacation, nurse prescribed 10 days of Cefdinir on Aug 2nd 2016. Never had a drug reaction but had to stop this on day 5,nausea and diarrhea bad. Was then given Amoxicillin which I’ve taken for 30 years and fixed the sinus problem. As the effects warning says 2 months later Oct 15th comes back. Since then I’ve had nothing but bananas,rice,oatmeal,soup,water and powerade drink.Taken kefir,bottle of 50 billion colon care.Went to ER Dec 10th, blood work and stool sample for C-Diff, test was Negative.ER doc says 30 days of fiber and florostor will clear it up.4 Days later on Dec 14th Gastor calls, I tell the nurse I just had the c-diff test,she talks to gastro doc and tells me the only thing they can do is give me colonoscopy and if my colon is inflamed nothing they can do, will just make it worse, if not inflamed give me a prescription.Since Dec 10th have taken over 90 Florostor and am now taking Digestive Advantage with it, also taken a package of Culturelle. Since the effects of this drug came back Oct 15th I’ve lost almost 30 lbs, haven’t had anything to eat or drink for 3 months except as stated above.Got the flu 15 years ago, never a drug reaction, have a BM withing 30mins every morning for 40 years, never had constipation or diarrhea till this drug.How do I get this horrible drug out of me.When checking this drug Omnicef comes up, was the active ingredient and did the same then as now, Just have brown water, no stool. Others have stated after endless test which found nothing, their doctors told them to just keep taking probiotics and it would eventually go away. Any ideas how to stop this, can’t work, my life is being destroyed by an antibiotic, Thanks,(…)