Acidity, gas, sometimes anus itch.

My problem started from November 2023, I have lot of acidity and gas and minimum 5 times toilet per days, After toilet I am not feeling empty my stomach. I first visited general physician in my area, they give me some basic medecine for acidity and digestion, they give me acidity capsule and 1 liquid for digestion. i am feeling ok for 10 days after that problem again started. After that I visited 1 gastroenterologist they also give me some medecine, during medecine I am feeling ok but after medicine completed after that 2-3 days acidity and gas problem started again, All my blood report, stool report and CT scan of abdomen normal. After 1 month GERD, heart burn and acidity reflux has been started, doctor give me some medecine and my upper endoscopy report also normal. Now I don't have GERD problem as much better that previous. But sometimes acidity is again happening and from last 2 days I have anus itching, burning and small pain, And i also see some little blood with stool.