Adele, I have had an op for this, when I was 20, it is soooooo important. Mine was due to a weekness when a kid they said, and the op near sorted it for me. it has taken a bashing now with three kids, and this last pregnancy is very hard when washing hands or brushing teath, I really have to cross my legs, and wear a panty liner just incase I cough or sneese without bracing, holding my tum!
The op is what happens if the exersizes don't work for you or help enougth, I have now two plastic clips, which you can feel through the skin (sort of eitherside of your lady garden!) these do unfortunatly swell a little and get sore each peiod time! and pregnancy they normally do it all the time, and I have to sleep with a pillow between knees normally. This time, my boy bump is soo high they have not bothered me yet, but the weight on my bladder has not helped still.
I have freinds who have had big babies, that have been wearing tena lady towels when doing sport etc , which is a real nusceince.
I am going to get that little gadget from boots to help with the correct exersizes after I have the baby this time, as for me, its really important to get it sorted. (I really don;'t care how much it costs either, this means soo much to me)
They always say find somethign you do several times a day and then always make a point of doing your exersizes while doing that , and it will end up that you never forget and it becomes normal, rather than havnig to find the time to do them - and do lots of them!
Eg making a cup or tea or waiting for water to boil, or walking through a doorway etc