You basically summed up my situation. I Have had this fbo for 3 yrs now. It all started out of no where one day in class. People were saying how it reeked of shit in class. Then as the days passed people said it was me. I was/ as humiliated eveyday. I attend college and you would think they would be mature about it but they are awful. I am and have been on rock bottom for 3 yrs. I am not treated like a human being. Its awful and unjust.
I think what you are doing is great maybe if you continue with the colonics and the diet it will work for you. Just don't stop since I heard people see results in 6 months or so.
Also have you heard of FMT (fecal Microbiota transplant)? people with gut related symptoms have cured themselves with it. I know it sounds gross but, I think it could work.