I was helping someone renevate a old house today, I started using a scraper to scrape off backing paper which had Artex on and done this for about 30 minutes without wearing any masks or gloves, then I clicked and realised the possibility of the Artex having Asbestos and stopped immediately. I spoke to the owner and he was very doubtful that the Artez has asbestos, but has never had it tested so it couldn't be ruled out. I did have a window open next to me about 60cm wide, and the backing paper was falling off in whole pieces, like wallpaper does, which resulted in minimal dust coming off the Artez. Once I stopped, I left the site and went home, showed/scrubbed and put all my clothes into the wash. 
If the worst case scenario turns out and the Artez did have Asbestos, how at risk am I as I'm really overthinking already and can't stop thinking about it.