If it's calming down it could just be a part of your withdrawal process , alcohol can cause pain in any area of the stomach and usually it's not dangerous but you can never know until you go to the doctor.
I know how you feel , i have been having abdominal aches and pains for a while now and i am scared to go to the doctor this early in sobriety , bad news would break me , but i know that i will need to go at some point.