Welcome Hyle!
Alcohol can definitely cause stomach and digestive problems, although only a doctor can really make an individual diagnosis. In any case, continuing to drink will only make your problems worse.
We understand how hard it is to imagine a life without drinking. Alcoholics try countless ways to cut down, take time off (like you did), changed what we're drinking...... anything
except to stop completely. That's what addiction does to us.
Glad you posted today - you're welcome here any time.