Help and support What to do in an emergency If you experience any chest tightness/discomfort/pain, or symptoms similar to your Heart Attack/previous Angina, please follow the instructions below:- 1. If your Chest Pain is unbearable Dial 999 for an ambulance 2. Otherwise – Sit down and stay calm If the pain does not ease after 30-60 seconds, take GTN (spray or tablets) Wait 5 minutes 3. If the pain has gone – REST If not repeat the GTN Wait 5 more minutes 4. AFTER 10 MINUTES AND TWO GTN SPRAYS - IF YOU ARE STILL IN PAIN DIAL 999 FOR AN AMBULANCE – DO NOT WAIT ANY LONGER.