Hi.
I've gone through your query. I can understand your 
anxiety. 
It could be due to 
chronic constipation or 
fecal impaction. I advice you to follow this, 
1. High dietary fibre intake : Oatmeal porridge, Chapatis, brown bread with
butter, honey or fruits such as prunes, dates, figs, mangoes,apricots,Green vegetables. 
2. Drink 10 glasses of water in a day.
3. Exercise.
4. Develop regular bowel habit
5. Tab. 
Dulcolax  or Tab. Cremalax - 1 at bed time.
If not responding, rectal 
enema can be tried 
Hope I have answered your query. Let me know if I can assist you further. Get well soon. 
Regards, 
Dr. Yogapriya V, General and family physician.