That's not really a chest burster equivalent scene then really is it?
Yes, but in which fashion is it going to rival the chest burster scene?
The gore fashion, or as I like to call it "the childish" way.
Or the psychological fashion. The adult way.
Which one is going to resonate in the bigger way?
You're potentially evoking a lot of fears here. Fear of surgery, fear of childbirth, body invasion, rape... Lots of things just beneath the surface. You don't need to pour gore on the scene for that to be effective.
Watch Evil Dead 2. For all the blood and carnage in that movie is it really all the scary or effective? It's freaking hilarious. (Intentionally, obviously, but it just proves the point that gore has nothing to do with scares.)