Take the cream cheese out of the fridge so it has a chance to soften up. Prep your shrimp.
Start boiling a salted pot of water for the fettuccine. Cook it al dente according to package directions.
Meanwhile, add the butter, cream cheese, cream, chicken broth, and garlic to a skillet over medium heat. Once the butter has melted and the pan has heated up, you can use your spoon to help the cream cheese melt into the sauce. This will take a couple of minutes.
When the cream cheese has been incorporated into the sauce, let it gently bubble for 5 minutes until the sauce has reduced somewhat. You can give it the occasional stir. I grate the parmesan cheese while it's cooking.
Stir the parmesan into the sauce. Let it cook for about a minute.
Add the shrimp to the pan. Cook for 5-6 minutes, stirring occasionally.
Season the shrimp Alfredo with salt & pepper as needed. Toss with the drained pasta and serve immediately.