Growing Sunflowers?

I planted sunflower seeds in a pot on August 12 and watered it. Now it is August 15 and I tried to dig them up to see if it is already sprouted and it is! But now there's a very, very strong heavy rain. I know that a sunflower needs to be under the sun to grow. What should I do? Does it die? Or what? Please help.

By Eunel