Bring a pot of salted water to a boil and cook the whole wheat linguine according to package instructions until al dente. Drain and set aside, reserving a little pasta water.
While the pasta cooks, heat olive oil in a large skillet over medium heat. Add minced garlic and sauté until fragrant, about 30 seconds.
Add the sliced mushrooms to the skillet and cook until they release their moisture and begin to brown, about 5-7 minutes.
Pour in the light cream and stir, allowing it to simmer gently. If the sauce is too thick, add a splash of the reserved pasta water to achieve your desired consistency.
Stir in the Parmesan cheese and truffle oil, mixing well to combine the flavors. Season with salt and pepper to taste.
Fold in the drained linguine and then gently mix in the grilled shrimp, ensuring they are evenly distributed through the creamy sauce.
Allow everything to heat through for another 2 minutes, then remove from heat.
Plate the dish and garnish with an extra drizzle of truffle oil and a sprinkle of Parmesan if desired.