If its a female, no. Their back nails grow very long and they use them to dig their nests. This is normal and you should leave them alone.
A picture would give us a better idea of what we are talking about.
Usually no, but there have been a few cases of overgrown nails here and there. I've never needed to trim any of mine.Are you supposed to trim any tortoise nails? Is that part of regular maintenance?
Thanks!