I'm fat, but athletic...?

First I just want to say your on the weightlifting team but you can't do a push up? Anyways I think what you are doing right now is fine. I am no health professional but I don't see anything wrong. A lot of my friends have gone through this phase, when your like 14 it is hard to get into the shape you want but I believe that once you get into your junior and senior year of high school you will begin to see the changes you want. It is important to remember that puberty makes your body different than normal sense, so don't worry about it right now.