Surry? There are bound to be cinemas near you, things to do etc, have a look around, it'll be a start, watching a film, and a proper gorwn up film at that, it'll take your mind off things!
Baby swim class?
OH FGS, there is no label to worry about, honestly,
That thinking is part of the illness, I promise you, it's not real in RL. Challenge negative thoughts like that as soon as they have the nerve to pop into your head.
This is an illness that thrives on isolation, on shame and loneliness. The more of the above you give it, the stronger it will grip.
There is no shame to a broken leg, no label to chicken pox, nor to asthma, anyone with any intelligence, when they hear you have PND, will feel nothing but warmth and sympathy to you and will want you to get better.
If you were ever unlucky to meet anyone ignorant enough to be anything less than supportive, honestly you can come on here and ask "AIBU to want to kick this person in the bits?"
The answer to that, btw, would be a unanimous YANBU!
MN-massive, are there any good PND books available?