i think it is good you are going. Although they will have the referral from your doctor and have some sort of idea they will ask you questions. It's about finding out how it is best to help you so they need to talk to you and find out what is going on. Try not to worry about it too much, try writing down things to get it straight in your head.
Mostly they will ask you questions to try and build a picture but again don't be worried.
xx
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