After you have given birth to your baby, your perineum has gone a lot of wear and tear. It will take some time to regain back its normal strength. You should be doing kegel exercises as soon as possible after the birth of your baby.
It is not only required, but it is necessary that you start performing the pelvic floor exercises as soon as you can, after you give birth to your baby, because it will go a long way in preventing complications, such as incontinence and pelvic floor prolapse.
Even if a woman has had a C-section, it is advisable that she starts doing kegel exercises as soon as her body allows her. It will go a long way in helping her prevent all the complications, which she would face otherwise.