I haven't heard of any sudden reactions immediatlely after taking Nolvadex.
From what you described, "something felt wrong right away having a bit of a problem breathing and blur vision," the thing that comes to mind is a recreational drug reaction. Is it possible that your Nolvadex was fake? Were you using any other medication or drugs?
The day after I take 1mg of Arimidex, my sex drive takes a dive, but I have never had a sudden reaction like you have described.
I'm curious to find out if anyone can answer this for you.
If you're feeling sick, then you definitely need to find a way to see a doctor quickly. Can you go to another part of the Europian Union and see a specialist rather than waiting for 8 months in the UK?