Simple constipation is caused by inactivity, dehydration and a lack of fibre in your diet. Therefore exercise, plenty of fluids and a regular high fibre cereal for breakfast are good starters for healthy bowels.
Laxatives (medication that relieve constipation) are available at supermarkets, chemists and local stores please follow the packet instructions.
If the problem persists call your GP for an appointment. If in severe pain not relieved by Paracetamol call 111 or if deteriorating rapidly or you feel to be life threateningly ill call 999.