Omnicef and laxitive

I took Omnicef because my doctor was not sure what kind of infection I had and he said Omnicef was a "well-rounded" drug. Meaning it deals w/all types of infections.
I had HORRIBLE headaches with this medicine. Completely opposite of everyone I've read on this site, I had constipation (where everyone else had diarrhea.) I also ended-up getting an intestinal yeast infection...Awful! My constipation & yeast infection eventually got so bad (no matter what I took for it) that I ended-up with (how embarrassing) a fischer. For those of you that do not know, that is a tear in the hole of your rear-end. It was severely painful and despite what I have taken to loosen my stool, I continue to have the awful tear to this day. (1 year after taking the medicine.) I went to gastro-entronologist and he said the only way to fix it (if not by laxitives) is by surgery. I'm hoping my injury will eventually heal by taking various laxitive stimulants.
I would not reccomend this drug to ANYONE!
Sorry for the gross details, but they need to be told to explain the extent of the injuries...