Stomach Problem and anxiety. Looks like?

Hello, from 2-3 months I am having stomach problems daily. I feel abdomen pain on the upper side (either on left or right)& feel like gas or undigested food trapped which is causing irritation and discomfort. My bowels are also disturbed, sometimes I feel constipated, other days I have to go twice or thrice, stool being hard only. In the night specifically, I feel a lot of gas trapped & abdomen pain which worsens if I am not able to sleep. Also felt dizzy at 2-3 occasions. Have watery belching. I am also getting very anxious these days. Even if it is a small thing, I tend to overthink alot due to which I am unable to sleep properly. And sometimes my entire body starts vibrating like when I am on an important call or even doing pranayama or if I stay without food for 4-5 hours. I got a full abdomen ultrasound which only revealed small kidney stone. Can someone please help with my problemWhat it looks like? If any home remedies that can help. This is really impacting my day to day life.