has anything traumatic happened in your life before you started feeling this way like the death of a loved one,emotional trauma is high on the lists of heart and anxiety problems.broken heart can do it.
This is NOT medical advice, but just some facts that I have observed over the years of my heart arrythmias. When you are scared, you pump out adrenaline, which makes your heart go faster. When you stand up, it takes a few seconds for your blood pressure to adjust to the new position, which can cause dizziness. Your heart rate is a little higher than high normal -- are you using caffeine in any form? Stress can cause a fast heart rate. It would be reasonable to ask for a referral to a cardiologist. Pain is a signal from your body that something may be wrong, and is worth getting checked out. Try to do things that are calming in the meantime, such as meditation or listening to calming music. It is unlikely your doctor would let you leave if he thought you were in trouble. A double check and some peace of mind are what you are looking for here. Good luck to you.