My upper dental retainer broke in half recently. Is it possible to have it fixed to save money? (Photo)

So i accidentally broke my upper dental retainer recently, but as it broke it half, it still fits in well in the mouth, it's just that the two parts aren't connected with each other ( shown in photo) is it okay to use it as usual as it still fits well in my mouth? Or do i really need to go see my dentist right now?