Hi Jayne
I hope you are getting proper treatment and recover quickly.
A friend of mine got septicaemia from being thorned by a blackthorn. An A&E job and over a week of hospital follow up. She warned me to be extremely careful when I was grubbing out all the blackthorn from a hedge in my garden this year. I did get thorned, but I was OK.
But blackthorn is really inappropriate for a garden, not only are the thorns vicious, it suckers very badly and quickly turns into a thicket. If you want to keep on good terms with your neighbours then don't plant a blackthorn hedge, or a bush close to the boundary. It is a seriously antisocial plant, doesn't respect boundaries. On the other hand, if you hate your neighbours and want to make a rod for your own back, well, maybe, it could be just the thing
