Midwife Nikki says:
This is an amazingly common concern. After a vaginal delivery, some women feel as though they will never regain their pre-pregnancy tone and shape in this area.
However, your vagina will gradually regain much of its former tone, and the pelvic floor will return to near its usual position, especially if you do pelvic floor exercises to help strengthen the area in preparation for birth, and continue them postnatally.
Your midwife can advise on how to do them.
You should be feeling more like your old self by about six months after the birth - your body does need time to recover, so be patient and look after yourself.