Every kind of statistic I've ran into suggests that if you're under the age of 35 the chance of being diagnosed with *** is very small. It's not impossible, but there are thought to be around 50 cases or less diagnosed each year (between 0.3% and 1% of cases diagnosed in a year). There are roughly 100-250 (debatable

) people in the USA who have *** under 35 out of the roughly 30,000 people who have it. Your chances of dying to *** from ages 25-34 are roughly 1 in 1,490,000 according to the United States CDC.
There are roughly 41 million Americans from ages 25-34. 41/1.49 = roughly 27 people die from *** in that age range for the USA every year. Not to mention, you are female, so the odds are even more in your favor. Some of these statistics are a bit older (10ish years) as I do think *** is a bit more common. However, it doesn't mean it isn't still a super rare disease for young people. I would think similar statistics would apply to your country, Germany.
You do generally see news stories, etc more often for young people who get it because it is so incredibly rare and usually a bit more heartbreaking to the public eye.
edit: And I can certainly understand the panic, but your profile says you've been twitching since July 2013. Chances are you are fine as it has been well over a year. I've been twitching since April and just noticed my tongue quiver I can't feel a month ago, so I've been sort of in full on panic mode myself. Started having throat clearing 3 weeks ago. Honestly, it is just like ...whatever at this point. We do a lot of this to ourselves with our worrying and anxiety. The chances of me being diagnosed with Bulbar *** are like 1 in 6 million... ie it probably isn't going to happen and I can just live my life

. And sorry for no tables, just thought I would toss out some statistics I've seen out there.