Hi psnchckn, welcome to healing well forum, we are happy to have you join us here. I am no doctor so I dont want to diagnose your problems here. I do think it is a wise decision that you have made an appointment for a check up and that you intend to mention this problem to your doctor. You have several positive factors on your side which you have mentioned in your post, 1) you dont smoke 2) your young and, 3) you dont have a family history of heart disease or heart problems.
What you may want to look into is the possiblity of maybe acid reflux. There is much research that chest pain, fluttering, the symptoms that you have described...can be the result of acid reflux and is often mistaken for heart problems. You can google it as "acid reflux related chest pain". I hope this helps some and please do keep us informed on how things go for you. Take care