It's wise not to use something hard, like a toothbrush or other kind of handle. Your tissues are tender and there's also the question of inserting bacteria. If you use your fingers inside, be SURE they are scrupulously clean, and also that under your nails is really clean. If you have long nails, don't let them get near your cervix, or you could scratch it. Clitoral masturbation works great especially if you have a "toy" like a rabbit or other kind of vibrator. Good luck!