Hey Ben! :)
I'm going to assume since you posted this under the anxiety section that you're considering this as a possibility, so how much stress are you under right now? Is this something where it's a constant pain that never goes away, or does it only come around in times of nervousness or stress?
My first reaction was that you're having anxiety attacks. Panic or anxiety attack 'symptoms' are nearly endless, and an attack effects each person a different way, so this could very possibly be your problem.
One time a while back I started a new job that was extremely stressful for me, and made me nervous almost every time I had to go in. On one of my first days, the entire time I was there it felt like something was wrong with my chest, like I couldn't breathe in far enough and like my entire rib cage and chest hurt. I honestly thought I was having a heart attack, and of course that just made me even more paniced. I just kind of waited it out, because I figured that if it were an actual heart attack, I would be on the floor dying and not able to function normally. I went to the doctor immediately after work, and the more I thought about it, the worse my symptoms seemed to become. They ran heart tests, breathing tests, etc. on me and the doctor finally told me that it was a bad anxiety attack. I thought this was weird, and when I asked him if the 'chest pain' symptom was normal for that, he literally laughed and said "ohhh yeah". :P He wrote me a perscription for Xanax and gave me one at the doctor's office. Within about 10 minutes I was completely calmed down and most of my symptoms were gone. I've only had a few times since then where I've had the exact same symptoms, and I just popped one of the pills and I was fine after that.
Soooo sorry for the long story haha, but this may be something you want to ask your doctor about. Your emotions effect your body a lot more than most people think, and even if you don't 'feel' stressed or nervous, sometimes you actually are and just don't realize it (but your body obviously does).
If it's to the right of your chest also, chances are it is not your heart. Heart pain is usually very isolated, in the upper left of your chest and (if it's an attack) goes sometimes into your left 'rib' area and down your arm.
The other thing to consider is possible gas pain ;) Sounds stupid haha, but you have no idea how badly it can hurt sometimes. My sister's an ER nurse and she thinks it's hilarious how many people come into the emergency room thinking they're having heart failure only to find out that they're just gassy XD Not saying this is what your problem is, but it's a possibility :P