Dear, welcome to HCM and thanks for choosing us.
I share your concerns. There are following possibilities I can think of with symptoms you have mentioned, taking into consideration
1 heart ailment (possibly transient attacks, can become real
heart attack if not investigated and treated),
chest tightness suggest this.
2 GERD (
acid reflux from stomach to oesophagus),nausea suggest this.
3 medicine induced gastritis
4. lastly anxiety disorders.
I would advise you to go in following ways
Get an ECG done and discuss with your cardiologist. Cardiologist will be able to guide you for GERD too. For GERD you may require an
endoscopy of stomach. If both are normal, . Lastly you may require a visit to
psychologist.
I hope my reply will help you. Please write to us or me for further information. I wish you good health.