I am a 24 year guy, all fit with no medical history . Since few months, I am feeling a sweet pain in the right side of chest .Its not a pain actually ,just a disturbance or palpitation which draws my attention. My hand, right hand goes numb..I find it impossible to fist hard. All the trouble is not painful but alarming, it scares me now. I am smoking and drinking since 4 years.And I have irregular sleeping habits Please help me.I am worried.What should I do?