Please consult a GI surgeon. They will ask you to do an abdominal ultrasound and upper gi endoscopy. Then a proper diagnosis can be made.

Typically that abnormal sensation around previously operated site could be troublesome sign if neglected gonna lead to major complications Usually after cholecystectomy,  we should be careful for observing either bile leak, Bleeding from cystic artery and injury to surrounding neurovascular structures

Get USG abdomen and pelvis and take a laparoscopy surgeons opinion

Whether it was open or laparoscopic procedure? If the problem is for long duration you must consult operating doctor. In open cases there may be chance of incisional hernia

There are some studies which show Gall bladder stones and H.pylori infection - bacteria in stomach can occur simultaneously. If u are having acidity issues try to avoid spicy and fatty foods Take Gastritis medication for 1 week to 10 days after consulting a doctor and checking what other medications u have. If doesn't resolve i advice a OGD scopy - camera is passed into your stomach and will check for ulcer & infection Ultrasound abdomen : new one may not reveal much unless if u devloped a postoperative infection . Can u share the previous ultrasound before surgery also here. Fatty liver if u have previous ultrasound and anything other than reason for gall bladder removal . Try to get treatment for that.

Consult Your Operating Surgeon for best Possible Treatment

Get an usg abdomen Restrict ur fat intake Try to loose weight if overweight

If your BMI is more than 25 then it might be Fatty liver .you have history of gall stones so probably you consume fat more and your BMi is high

Get usg done

U can get USG done to know root cause