This is an alien/insect horror film where most of the cast dies, and at the end there are only two survivors. The alien/insects can ‘take over’ human bodies somehow. One of the final scenes shows the two survivors nearly back on earth, one man and one woman, the woman is pregnant, and when she looks back at the man she sees his mouth/face open up into insect-like jaws and realizes that he’s been ‘taken over’ the whole time, and that she’s carrying an alien/insect child.

I saw this on tv, but I’m pretty sure it was a movie. It was in English.

I’ve been trying to remember this movie for years, any help would be awesome.