The OP has been given the same advice that has actually helped a lot of women avoid surgery ......... the professionals will keep on about it cos many women say they do it but dont do as much as they say they so ..... no slurs , its human nature 
also its rare to so surgery on women planning to get pregant again because that can undo any surgical intervention if done before family completed.
Surgery CAN be successful for prolapses and incontinence (I had mine about 5 months ago) but after it you do have to be aware of the types of activity that can undo it...... labour obviously puts one heck of a strain in the pelvic floor. ....... I for example have to be aware all the time that things like throwing hay bales around will do me no favours !!!
Before surgery you would prob need to have all sorts tests on bladder to make sure its stress incontinence and what type of surgery will benefit. You would have to be aware for example of the possible complications if offered tvt tape as it can sometimes cause more problems that you had origionally.
GPs have to be sure you reeeeeeeeeeeealy have done all you can first before emarking on this surgery, tis not minor surgery !!!!!!!!
Its not a straightforward thing to say its something that "should not have happened" as if its been something "done " to OP either that was "not her fault"...... it might be nothing at all to do with the forceps birth !!!!!!!!!!!
I did not have forceps at all ..... but
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I did have three large babies ( largest 10 lb 1 0z)
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I did work as a nurse which involved a lot of manual handling ( pre hoists etc)
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I do get bad coughs ( bad enough to break ribs !!!)
There are alot of things that can lead to women developing stress incontinence !
having sid that .........
Hidingforthis ....... perhaps you can carry on doing the exercises and even get a toner ( but do be careful and ask advice about proper usage).
If you want another pregnancy you might postpone any surgical treatment till after .......... depending on whether there is any prolapse of the vaginal wall or not accompanying the stress incontinence .... fixing problems might include repairing the vaginal wall. Not good to stress is out by having more vaginal deliveries !
If you dont want to be preggers again then by all means go back and be really honest with your GP about how much it affectgs your life.......
the NHS DOES care.......... othewise why would we have consultants who specialise in gynaecological genitourinary issues ??????