I have been diagnosed with costochondritis, however I have been having a tingling arm and waist. I have had pain in my chest, arm, shoulder, back. I have had an ECG but everything with my heart, they said it was ok. I went up to A&E a few days a ago and they told me to go away because there was more important people to deal with. I'm starting not to sleep well because of my anxiety. I don't know what to do, I feel alone in this.