Spritz a pan with a little low calorie cooking spray.
Add the onion and celery, and sauté for about 5 minutes until softened. Add a splash of water if it starts to stick.
Add the grated carrots and garlic, and cook for another 2-3 minutes. Again adding a splash of water if needed.
Increase the heat to medium-high. Add the pork mince to the pan, breaking it up with a spoon. Cook until the pork is browned and cooked through, about 5-7 minutes.
Add the chopped tomatoes, tomato puree, chicken stock, oregano, basil, bay leaf, and a good pinch of salt and pepper. Mix everything together until well combined.
Reduce the heat to low, cover the pan with a lid, and let the ragu simmer gently for at least 25/30 minutes, stirring occasionally.
While the ragu is simmering, cook the pasta according to the package instructions. Drain the pasta and set aside.
Remove the bay leaf from the ragu.
Drain the pasta and add to the ragu. Add the pasta to the ragu and mix together making sure all of the pasta is covered and serve.