In a large Dutch oven or stock pot, sauté mushrooms and onions in cooking spray until slightly brown and soft, about 5 minutes.
Add ground turkey, garlic, flour, paprika, thyme, salt, and pepper. Cook until turkey is crumbled and brown, about 5 minutes.
Add Worcestershire sauce, chicken stock, and egg noodles to the pan. Gently mix together until egg noodles are submerged in the liquid.
Bring to a boil, then cover and lower the heat to a simmer. Cook for about 10-15 minutes, or until noodles are tender but not mushy.
Remove from heat and gently stir in cream cheese and yogurt. Continue to stir until cream cheese is completely melted.
Set plan aside, partially covered, for about 5-10 minutes, or until most of the liquid has absorbed into the noodles. Taste for seasoning and add more salt and pepper, if needed.