What Causes Needle Sensation In Limbs ?

Hi I'm a 30 year old male. I've recently been experiencing a tingling feeling in my right arm & a sort of heavy feeling in the middle of my chest. It's not severe just feels strange. I am a heavy-ish drinker & would say my diet isn't the greatest but not terrible. I'm about 3 stone overweight. The tingling/pins & needles feeling comes & goes but has no real movement problem. Any ideas