That's kind of how I was before I had my daughter. And while I was pregnant, we bought our first house, and my fiance worked nights. SO, I had to be at home, pregnant, and alone AT NIGHT. It was horrifiying at first.

But the reality is that you will get used to it. You'll learn to be alone (or at least alone with your son), you'll learn to cook (surprisingly, I did), you'll learn to try new foods or at least prepare the ones you like healthier (whole wheat bagles with sause and part-skim cheese thrown in the oven for 15 minutes makes a mean bagel pizza that's good for you too), and you'll probably still whine a lot haha, I do too

Basically what I'm saying is that becoming a parent really changes you. You'll get used to the things you're scared of (even if it means sleeping on the couch for a few months like I did hahah).