My Chest is getting smaller but?

ok here's the thing. I've been really good at watching my weight i've only lost about 17 lb since the beginning by not eating bread and tortilla, but i took a better step and started to go to the gym, working out and doing some cardio. I'm a guy but i've been over weight almost all my life, but yeah anyways before i was able to grab a hand full and more of my "boobs" but now like i can only get like half and i can see they are getting smaller but the skin isn't retracting. My question is if it is normal for me to loose mass on my "boobs" and my skin be like that, meaning I need to just work it out more with weights or should i go see a doctor... i'd post pics but one i don't know how to do it and two it would be weird. but if you wanna see the difference hit me up on this so i can give you my myspace, i'll have pictures of before and after. thanks