Can my crowns be removed before they fall off and be glued again?

I have two crown in my front teeth and i've had them for almost 5 years. Lately i been feelong like their loose, i can already see them coming off from the top, you can already feel a little space in between them . They hurt so much something i dont know if is because imvery scared of them falling off or they just hurt because they're about to fall. Im scared that if they come off it'll break my teeth. Should i go see a dentist and get them remove and glued back again? Please help me!