Hi  I Am 22 Years Old (male) Height 5feet 8inch

Hi 

I am 22 years old (male) height 5feet 8inch , weight 61kg since my childhood i was always an underweight category and even now. Instead of my muscle growth i was getting alot of fat at chest ,stomach and at my back. Sometimes my nipples bulge and enlarge and it looks a little bit awkward if i was wearing a T-shirt. I tried gym for 3mnths but it still didnt go, is this a case of gynecomastia ? if so whom should i consult .Please give a suggestion