You need to maintain balance in fiber intake. If fiber intake increase or decrease you can get these type of problems. While consuming fiber foods maintain equilibrium. Here am giving the fiber intake level as per their age and gender.

Men below 50 years have to consume 38 gm per day.
Women below 50 years have to consume 25 gm per day.
Men above 50 years have to consume 30 gm per day.
Women above 50 years have to consume 21 gm per day.

Try to maintain balance in fiber intake and drink more water.