Stomach pain. Afore said reasons.

Hello, I was suffering from stomach pain and vomiting before 6 days. After taking doctor prescribed medication( prescription attached) I felt well. Whenever I am taking medicine I feel relax but from 3 days I am having little menstrual discharge. My LMP was 2nd July of this month. I am also suffering from piles since 10 months after childbirth,  but I have a history of piles since childhood. Everyday I am taking pain killer, stool softener and ointment medicines. But still I feel pain while passing stool. I have a history of peptic ulcer and colic. My family having history of cancer, gastric,  piles and neuro problems. Kindly suggest medication or ultrasound considering afore said reasons. Thank you Sushree Mishra