Any chest pain or tightness needs to be evaluated by your doctor to rule out any heart problems. The other thing you need to consider is that you might be consuming too much caffeine from your energy drinks which can cause symptoms of anxiety and chest tightness. You may want to try discontinuing this habit for a few weeks to see if your symptoms get better.
As for the hand and foot pain, this could be related to general inflammation in your body or arthritis. Omega 3 fatty acids from fish oil can help to reduce inflammation and may help your pain symptoms. However, you should get evaluated by your doctor with at least some X-rays to rule out anything more serious.