Talk to General Physician on Mens Health

I am a 25 year old male. I have been a fat kid since childhood but two years ago I lost a lot of weight through diet and workout but I am unable to loose my chest fat. I have a very saggy, puffy and loose chest, although I have been working out for 3 years now. Secondly, I got married last year and never had sexual experience before that. I get thorough erections but during intimacy I get too sensitive and ejaculate on slightest touch, but I carry on for two to three times which prolongs to 30 min but its very tiring. Is this normal or Do I need to consult and endocrinologist or someone else? Please guide me.