One of the most embarrassing symptoms of weak pelvic floor that can happen to you is when your pelvic floor muscles are too weak and not able to do their job properly. This leads many people to have discomfort during physical relation, leaking urine or stool through small tears in their anus (known as fissures), sometimes even passing out because there wasn't enough air getting into our body while we were trying so desperately hard just let go!
How does this happen? First of all, it has been known for a while that people who have gone through some kind of trauma in their lives (either just before or during puberty), usually females and teenagers, can develop weak pelvic floor muscles. It is said that this condition can be caused by accidents, surgeries, endocrine or nervous system disorders (such as stress), and even childbirth.
Source Link: sites.google.com/view/weakp...
Pelvic Floor Pain After Urinating
Endometriosis surgery with pelvic floor dysfunction
Pelvic floor spasms and pudendal neuralgia. 
Pelvic floor therapy after menopause 
