Hi, recently I've been getting a lot of dizziness and lightheadedness along with faint pain coming from heart,this drops pulse and oxygen levels and then outs me into panic attack which will raise pulse and when I calm breathing raise blood oxygen too.im worried this is not anxiety though,I have Dr appointment for Wednesday but should I go hospital before then? I'm scared to go asleep now.ive multiple blood tests,ecg and an x-ray done over last few months and nothing showed up.but its getting worse now