I'm having chest pain that's really concerning me. When I press the center of my chest with my finger, it hurts, and sometimes I feel pain on the left and right sides too, but other times there's no pain at all. Even when I cough, it's like the pain flares up in my chest. Lately, I've also been experiencing some back pain. I have had diabetes for the past 10 years and have been on Novamix 30 insulin. Could you suggest any medication or remedies for relief?