Gastroentrology. Down. what should i do.

Sir i had bloated stomach,too much gas formation,urge to stool after every meal and some constipation as well as loose motion simultaneously...i went to a doctor who prescribed me orozole,agl5zyme...but problem was not completely over...next time he prescribed wokride ,and then rantac od and enteroquinol...now i don't have bloated stomach but i have to go to bathroom after having meal...also feel incomplete bowel movement ...Random mild pain in stomach but less or almost no in right side until i press on right side...on left side i feel as there is some pressure downwards when i bend down or seat in toilet...when ever i exert force downward during faecal excretion i feel if there is a shield in left and middle stomach which is not letting my force go down...from today i am feeling same in right side of abdomen...i also have backache,and pain in chest when i press them with fingers...i had ultrasound but it was ok...what should i do...