Oh No!!!! Bad Bug/worm

[Lorri D]

I planted my garden out about a week ago, because of weather. I just went out a few minutes ago to see one of my melons wilted. I pulled it out of the ground and cut it open. There were white worms inside. They look like little round worms that your cat or dog get. What can I do? Is there a way to save the rest of my plants if I have more of them? thank you so much! Lorri D