What will happen if i leave my toe fracture alone, will it heal on its own?

Yes: If the fracture is not displaced it will heal. Stabilizing the digit by taping it to the neighboring one helps.

Yes: It will heal if it's not displaced.

Usually: As long as the toe is in good alignment and it feels like it is improving, then it should heal. Stay in a stiff shoe and limit activity to tolerance. See your podiatrist is concerns.

May or may not.: If left untreated it may not heal as good as you would like.