I need help with my puppy!?

My 11 week old labrador is biting sooooooooooooooooooooooooooooooo bad! He has broken the skin with his bite about maybe 5 or 6 times between yesterday and today. He has moments where he just can't stop and I feel like nothing will work. I have tried pinning him down and holding his muzzle but he just wiggles like crazy for endless time. I try walking away but as I'm getting over the baby get he tries to get my legs or if I'm walking away he keeps chasing me almost. I cannot control my temper and yell very angrily very often. Can anyone please help us to get him to stop biting me and for me to control my temper better?