Hacky iron callaway

What is this dull pain next to my heart mean? - what is a dull heart

I'm young and healthy, I have a Murmora cardiac hypertrophy and heart valve (which is very common and normal, the doctor told me I), this dull pain on the left side of my heart and then the left side of my whole arm went a little numb to the progressive deterioration caused by inhaling the exhaled air, I feel bad for 5 minutes, then disappears after a drink of water, and the rest. I palpation too.I sometimes bad, what happened for years, so I'm not critical, but what then?