Discomfort in lower right abdomen. Food.

Dear Sir, I was operated for appendicitis in 2009. Post that I had no issues. But after appendicitis I started feeling little discomfort in right lower stomach ( general area near appendicitis scar). I also did ultrasound and rechecked but nothing was noticed. I have been having gas and bloating issue since then and now a days from last 8 to 9 months, I have a lot of gas and bubble kind of feeling ( gas formation) kind in right lower stomach. Whatever portion of food I eat , my burp starts. Yes one this I'd like to admit is that I take a lot of junk food and also alcohol during weekends. I don't exercise due to busy office schedule . I want to get rid of this discomfort. Very rarely I also get anal fissures ( once in 6 months). I eat a lots of spicy food. Thanks and would seek guidance .