While the level of trauma known with vaginal delivery is not the same as that with a cesarean, there is still a risk for trauma to the pelvic floor. According to research, planned cesareans are not protective of urinary incontinence as 40% still report it (MacArthur et al., 2011), nor pelvic organ prolapse (Glazener et al., 2013).
Not to mention, scar tissue which can adhere to and cause restrictions with the fascia of the abdominal muscles and those of the pelvic floor.
This article by BellyBelly.com gives some insight:
If you are ever in doubt or have any concerns, you should always contact your OB/ GYN or your pelvic health physio/ physical therapist. These individuals are able to assess the integrity of your muscles both externally and internally and provide you with your followup action steps to ensure that you can get on the path to optimal health, function and happiness.