Stomach pain right and left side and.

Dear sir, Couple of months ago blood bleeding from anal while sitting in toilet room and some times forcely relesed my stools , one day i got anal pain i went to hospital , doctor put one finger into anal deeply and doctor told polyps came and do operation, he given some medicines i used that medicines and no problem from anal , but now i am getting pain from left side entire stomach area and some times right side also, one day i got leftside stomach pain that time i am feeling inside floating and weekness and cramphy and some one eating my inside parts , i feel like that again i went to hospital , i took some blood test , crp test 11.61% is there. after blood test doctor told colonoscopy test required , i asked what is my problem we cant explain my problem can u give good suggetions for me