There is no such thing as a good idea to have a painless injection in labor. The main purpose of the injection is to relieve pain and increase the probability of a successful delivery.
For women who have a normal labor, there is usually significant pain during the process, which many women cannot tolerate, so pain can be relieved by painless injections.
Although painless injections can relieve pain, they need to be injected in the lumbar spine and continuously administered to improve the pain. Some patients may experience pain in the lower back after the painless injection.
Overall, when giving birth, you should take your situation into account and work with your doctor to administer painless injections if necessary, thereby improving pain symptoms.