PVC or something ? Need input!!

[Anxietyworld]

Let me start off by saying I'm a 24 female , overweight and working on it, healthy family and decent blood pressure. My heart rate varies , when I'm relaxed it's 60-70, when I'm anxious or active it's 80-110. I have a severe anxiety disorder and I honestly don't know if what's happening is anxiety or health issues. I had a a bad cough about 3 weeKS ago, coughing up yellow sputum and feeling ill. Shortly after I noticed I was getting palpitations daily , about 4 a day. The palpitations felt like a flop and only lasted a second with no pain. I got really paranoid and bought a stethoscope and listened to my heart , if I'm listening for 5 minutes I hear about 3 short pauses within that time. I googled this and it said PVC. I went to the doctor and got a ekg and he listened to my heart and said all was normal it was just fast. He scheduled me for a stress test and 48 hour Holter monitor for next month. In the meantime I'm terrified . Every small symptom is making me afraid. I walked up the stairs last night and had slight chest pain in my left breast, which I was afraid was heart pain. I've had 2 different situations where I had left chest discomfort . The first one went away as I passed gas lol my stomach was groaning loud aND after a while it went away. The one yesterday went away within 30 seconds but it scared me. Sometimes I feel off balance especially in heat , like I feel hot flashes on my face and shoulders but I assumed this is my anxiety and being out of shape. Doctor doesn't seem worried but I sure am. It's debilitating . I'm afraid to exercise , which I need to do to lose weight . I am afraid of dying and my anxiety is so high :( I know I sound pathetic but if somebody could please give me advice or tell me if you've been thru it or some input, it would be appreciated .

[Anxietyworld]

I didn't mean left chest pain, I ment right . I don't know to edit this .