Low-Carb Shrimp Parmesan

2 pounds shrimp, shelled and deveined
2 tablespoons olive oil
1/2 cup minced onion
2 teaspoons bottled garlic
1 (8 ounce) can tomato sauce
1/2 cup chicken broth
1 teaspoon basil, crushed
1/4 teaspoon oregano
2 teaspoons salt
Pepper to taste
1/4 cup shredded Parmesan cheese

Heat oil over medium high heat, saut