You can take Cremafin two tablespoons at bedtime.

Considering you have discomfort in your abdomen, You must atleast get an Ultrasound of your Abdomen done to rule out some kind of issues internally that might be causing you the inability to pass stools. If its a dietary issue, the lactulose and dulcolax would have helped. However, you can still try increasing fibre and fluid intake. A Dulcolax suppository is also helpful but tedious to insert by ones own self

Enema will help you and take cap Sompraz L once daily in the morning empty stomach