Spray large nonstick saucepan with cooking spray. Add oil and turn heat to medium high. Add garlic and mushrooms and cook 3-4 minutes, or until garlic is golden. Add shrimp, thyme, oregano and pepper and continue to cook, stirring frequently, until shrimp become translucent, about 4-5 minutes.
Meanwhile, cook linguini according to package directions until al dente. Drain, cover and keep warm.
Add tomato sauce to saucepan and bring to a boil. Reduce heat to medium and simmer, stirring often. Stir in parsley and continue to cook 4-5 minutes, until sauce becomes fragrant.
To serve, pour sauce over linguini and sprinkle with Parmesan cheese. Serve immediately.