I Have Had Tremendous Gas For About A Week. It

I have had tremendous gas for about a week. It mainly starts late at night to early morning. It was much more intense right when it started about 8 days ago and comes and goes in intensity. I have also had sporadic periods of rotten egg burps and sometimes they are in a higher pitch. Not all burping has been of this nature. I've had regular bowel movements, no diarrhea.