Thanks for writing in.
Given your age, it is unlikely that you have a heart problem. From your description it seems you are suffering from gastroesophageal reflux disease
. The pale nails are suggestive of anemia
I would suggest the following:
a. take small frequent meals
b. Have an early dinner
c. Take Prevacid
OTC once a day and see if it helps.
d. Have a healthy and balanced diet
Hope this helps