Steps of pubic hair growing back?

I shaved my pubic hair and I really regret it. I'm a 14 year old boy and I'm worried about how fast it will grow back. And I'm wondering if the rate of growth changes as it gets longer. Or maybe if the stubs grow slower or faster. How long will it be after a week? It was originaly about 2 or 2 1/2 inches. I really want it to hurry up and grow back!