Gastroentrology. What should i do?

Sir 2 months before i had bloated stomach ,too much gas formation ,and urge to stool after meal and pain in stomach...i took orozol and al5zyme...after that i took wokride..then rantac od and enteroquinol.. Now there is no bloating and gas...bt i have to go to toilet after every meal...and i also feel incomplete bowel movement... And in the left side of abdomen i feel if there is something heavy placed in that side...when i seat down to make faecal out and if i put force downward on my abdomen then i feel there is a shield in the left and middle abdomen which doesn't let my force go downward...i also have backache n pain in my chest when i press them...i had ultrasound but it was ok..what should i do