Prevenge

Prevenge is a 2016 British comedy slasher film written by, directed by and starring Alice Lowe in her directorial debut. The film also stars Kate Dickie, Kayvan Novak, Jo Hartley, Mike Wozniak, Gemma Whelan and Tom Davis. The plot follows a pregnant widow who is convinced her foetus is compelling her to embark on a killing spree as revenge for the death of her husband.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.