The symptoms as mentioned in your post can be due to:
1. Any infection in the Gastrointestinal tract
2. Irritable Bowel Syndrome
3. Increased gas production due to dietary factors or allergy to certain food products.
The feeling of tiredness & lack of concentration can be attributed to inadequate hydration status & electrolyte imbalance
in the body, which is secondary to your Gastrointestinal pathology.
Though symptomatic relief can be obtained with Pantoperazole & Dicyclomine
preparations, the underlying cause needs to be treated.
So, kindly consult a Gastroenterologist
& get a proper clinical examination done.
Investigations like stool microscopy & culture, Ultrasound
scan of abdomen & colonoscopy
will be helpful.
Till then, maintain adequate hydration & take soft, non-spicy diet.
There is no need to worry...you will be fine.
Wishing you a good health & a speedy recovery
Thanks & take care.