4 doctors agreed: See your doctor.: Kidney stones hurt and you should have pain medication to get you through them. Doctors usually get imaging on the stones to find out their size. If they are more than 7mm they're not likely to pass, less than that they likely do in less than 2-3 days.
Re: how long does it take a toenail to grow back? A big toenail can take up to 12-18 months to grow back. Find yourself a good nail tech who specializes in sculptured acrylic nails and have them sculpt a toenail for you. This can be maintained until the natural nail grows back.
An injury to a nail may result in the loss of the nail. As long as the nail bed itself wasn't damaged, a lost nail should eventually grow back. Healthy fingernails grow at a rate of about 0.10mm per day, but toenails are slower, growing at only about one half to one third of a fingernail's rate.