Facing gastric problem, bloating. To do?

Hello, My friend she is 32 years old weight is around 74 having ulcer, her stomach is quite large she always feel like she is having gastric problem bloating and even her bowl movement is not regular. If she eats pulses, potatoes and few others she get gastric problem which makes her very uncomfortable and pain. What to do about gastric problem and what to do regarding bowl  movement , she don't go motion regularly on daily basis once in 2 days and some time morning  some time at mid night its not regular at all she is having very hard time to get bowl movement  on regular basis.what to do to make her bowl movement regular and on daily basis. Her food routines are common, she is non vegetarian. On  regular basis she have dosa , idli and chapathi rice. Doesn't have non veg very often.