Why do i have labored breathing problem after i eat and i couldn't pass gas for few hours and plus i got stomach virus?

Gastritis: Sounds like irritated stomach or gastritis. May even be gastroesophafeal reflux (gerd ) and hiatus hernia. There are other possibilities that only a visit to a doctor can help figure out and diagnose. If you are not already doing it, try over the counter medications for acid, such as zantac, (ranitidine) pepcid, and Prilosec for a couple of weeks then visit a doctor.