I'm sorry to hear about your back pain. Sprained backs can be painful and can make it difficult to move around. The best thing to do in this situation is to rest and avoid activities that may worsen the pain. You can also try applying ice to the affected area to reduce swelling and pain. If the pain persists or becomes severe, you should contact your healthcare provider for further advice. It's also a good idea to avoid cutting your own toenails while you’re still pregnant to avoid any similar injuries