New Mom with boy! Please Help!

Hi everyone,

I am a first time mom to a three week old boy. Here is my problem. At least 2-3 times a day I have to change his clothes because when he urinates in his diaper it leaks from the side, or back. This soaks his clothes and blanket. I have tried aiming his (private) down, up and every which way to prevent this. Also have tried huggies and pampers. Newborn size and size 1. His legs are pretty skinny, he was 3 weeks early. Any suggestions those of you with boys??