Madeline's Cajun Shrimp Pasta

1 lb peeled and deveined shrimp
1 tablespoon butter
1/2 box linguine
1 small onion, diced
1/2 cup red bell pepper
1/2 diced celery
1/2 tablespoon Cajun seasoning
1 tablespoon lemon juice
1/2 cup heavy whipping cream
1/2 cup chicken broth
Minced fresh parsley, if desired

Prepare pasta according to package directions. Set aside. In a large non stick pan, sauté pepper, onion and celery in butter until tender.  Add broth, shrimp and seasoning. Cook shrimp and vegetables for 2-3 minutes.  Add chicken broth and whipping cream.  Simmer for 2-3 minutes.  Add pasta and stir together.  Cook for another minute or two.  Garnish with lemon juice and parsley, if desired.