Heart related pain would not be relieved by topical liniments. Things like Icy Hot or Ben Gay only relieve muscular pain
. It's also unlikely that you have a cardiac problem, based on your given age, diet, weight, and history. A lot of people die in their 70s. In fact, the life expectancy in the U.S. is in the 70s (give or take a few years). Try to remember that! At 27, that's a lot more years to be worried about your heart.
Moreover, you really need to think about what you're letting your anxiety
do to you. EVERYONE (especially as they grow older) worries about their health, or when they might die. The thing of it is... most people try to enjoy the life they have, while they have it. If you have regular heath exams, try to trust the fact that the people who give you the results know what they're talking about. Why insist on second guessing them? Let it rest, move on, and enjoy the fact that you're in good health. Every minute you sit around worrying about your heart, is a minute you could be thinking about something you enjoy. You're robbing yourself of precious moments.