My son is a serious and drug-free weight lifter. He researches nutrition and eats according a very structured plan. He makes changes depending on his goals....bulk, putting on muscle, muscle definition, etc.
He also cross trains and works different muscle groups on a rotating basis.
Small comfort but...he says swimming is the most demanding sport in his routine.
Good Luck
If you stick with the right kinds of food you should do well. Check out spark people and see what they might have to offer.