Pain at multiple places around chest.

I am having pain at multiple places in chest, around chest, side and back since 3-4 days. 1. First I experienced a pain at lower-left region ( just below breast). Its not at a point, it forms a line. 2. Similar pain at right side as well. 3. Pain at above breast and slight close to centre. 4. Same as point as 3 but in the right. 4. Pain at left side of the body in t 5. Once pain was at below Jaw at left side. 6. Yesterday I had slight tightness and pain 3-4 inches below the centre. 7. Just now I experienced pain below left arm pit.. Above pain is not constant pain. It comes for couple if seconds and goes. Interval of pain is between a 5-10 minutes to an hour. There is no specific time period, having a discomfort 24/7. I am 27 year old, over weight (110kg, 5'10") and ex-smoker (2011-2016, left in August last year). No family history of heart issues. Please help me in diagnosis or please let me which doctor I should consult? Cardiologist? Gastroenterologist? Physiotherapist?