Thanks for coming to HCM. Sorry to hear about your problems. You are probably having anxiety attacks. How stressed are you? Are there emotional events happening in your life since some time?
If you will hyperventilate (breath fast) in anxiety, you can feel dizzy or pass out with tingling
or cold feeling in fingers/skin. Also, heart beating rate goes fast (just like during exercise) and you might feel pounding heart etc. Anxiety or panic attack
can be a dreadful feeling but can be controlled. You should try to keep relaxed as far as possible, do meditation
and/or yoga, listen to relaxing music, talk to friends/family members, express your concerns, exercise regularly & eat a healthy balanced diet. Avoid medicines just to make your self feel better.
You can get lipid profile
done, it is unlikely that you are having coronary artery disease. You can follow routine health-check plan as advised by your doctor.
If you still don't feel better in 2-3 weeks, contact a psychiatrist
Hope you feel better soon!