Is It Possible For My Palate Expander To Split The Palatal Suture?

I am a 20yo male, class iii, that's being treated with a palate expander. I've had it on for about 2 months. I am just beginning to notice that there is a big hole right down the middle of my palate. Does this mean my palatal suture is splitting? I do not have a gap in my front two teeth nor does the hole in the middle of my palate extend all the way down to my front teeth. My question is, is this normal? Is my palate beginning to split or does anyone have any insight. Thank you!