Hi Maggyie
Welcome to our forum and I must say so sorry for your symptoms, it is early days for you and you really must take medical advice on this, SF PN is a weird disorder, I have had this since 31yrs old so no it doesnt just happen to older folks(although it is the same for everyone regardless of age) - in my case it has been a progression from one little toe to both feet and climbing over a period of 13 years - I have only been on pain meds for the past 3 years and most of the time i am able to function normally - I hold down a full time responsible job and am a busy wife and mother.
I cant stress enough you need to go back to the medics so that your anxiety can be alleviated, it cant be good for you - I always find distraction is better than a cure
Best wishes