Hi italian, welcome to NT!
Ok, first up you need to take a few deep breaths and calm down a little - high blood pressure is our enemy! I know just how scary and frightening finding out you have an aneurysm is, but you can't let the fear overwhelm you.
I have a 7.5mm aneurysm on the left middle cerebral artery which my NS also won't touch unless it becomes unstable. They found mine 18 months ago incedentally, and have had it monitored ever since. In fact my next CTA is this Tuesday!
Has your doctor suggested anything, like keeping an eye on it to make sure it doesn't grow?
I know this is really hard for you at the moment, but it DOES get easier to live with as time goes on. I remember at first I was terrified of even sneezing for fear my head would blow up! Hehehe.
If you have any questions, please ask - we're here for you on this journey.