I don't look like I lift

[Striking_Cobra]

You got some great advice. Key points: Diet and Rest.
Soccer AND weightlifting combined requires lots of calories and sleep. Don't look for supplements to be your only hope. At least 6 meals a day.

And as always stay hydrated, i'm sure you're losing alot of water.

 

[Fit Freak]

Very good point...too many people think supplements are the answer...supplements are just that...they 're useful at times but only to "supplement" your diet and training.