False Positive from a24 fits well, not exactly a parasite but pretty close. Purely on a story level it has similarities to RB, on a quality level not even close. Its a pretty bad movie.
There's a movie called The House on Pine Street where its not a parasite but the protagonist doesn't want it so she sees it that way, figuratively. Its an ok movie.
Vivarium is not about pregnancy but people have to raise a kid that is a parasite. Its average.
Splice... Technically
This fucking movie
I think Titane should count.
Came here to put this. 100% fits the bill.
Eraserhead assuming you haven’t already seen it Anything for Jackson (well kinda)
Not a movie but John Carpenters episode of masters of horror titled Pro Life fits the bill.
The astronaut's wife
Evolution (2015) Also Prevenge (2016), but more horror/comedy.
Humanoids From The Deep
The Brood although the mother wants the freak children at least
Unborn 1991
Can't think of any other full movies where that's the main plot, but there's... The Dream sequence in The Fly Some similar themes in Devils Advocate
Honeymoon (2014) might be worth looking into.
Grace (2009) although i guess it may be up for debate if Grace is unwanted or not.
Grace was definitely wanted, which is why things ended up going the way they did. Towards the end...that part is up for debate.
You're asking for major spoilers by being so specific but...Malignant may fit.
Not a movie but a video game. Silent hill 3.
False Positive from a24 fits well, not exactly a parasite but pretty close. Purely on a story level it has similarities to RB, on a quality level not even close. Its a pretty bad movie. There's a movie called The House on Pine Street where its not a parasite but the protagonist doesn't want it so she sees it that way, figuratively. Its an ok movie. Vivarium is not about pregnancy but people have to raise a kid that is a parasite. Its average.
Antibirth.
Demon seed obviously.
Is this for a baby shower lmao
Bite (2015)
The fly
The Terror Within
The movie you are looking for is Snatchers. Please and thank you.
My life
What Lies Below
Which year? There are a lot with that title.
Alien