What Causes Bloating Of Abdomen Immediately After Having Food?

Hello , I have bloating after eating, and have a pain on lower right hand side from time to time, maybe once or twice a day I feel it pain. BUT when I fart / release gas , I feel much better , it feels like I have trapped wind . And always after evacuating bowels I always feel fresh and relieved ....
I don't drink alcohol or Smoke or any bad things, except I like coffee coca cola and yogurts
Any idea ?