Should I start over with my seeds for my vegtables?

I put some seeds in some soil to get keep them inside so they can get started. I planted tomatoes, beans, egg plant and bell peppers. It’s been a week and nothing has popped up. I didn’t use starter soil and I just learned now, that I should keep plastic wrap over them to keep them moist, so I’ve been doing that for a few days. I also think I might not have kept them warm enough at night. Should I start all the way over, with new seeds and new dirt? or will these guy pop outta the dirt soon.