Yes or no. Do you follow any new teaching that the pope says is docrine?
There never has been, nor will ever be, a "new teaching" of the Catholic Church.
When it comes to infallibility, the pope's power is limited. His duty is to guard the "deposit of the faith," the perennial teachings of the Catholic Church. He can't contradict anything that was taught before. He can only clarify teachings that have been misunderstood or need to be further explained.
I'm not sure the pope makes declarations on "docrine." I can't find that word in my dictionary either. Is it German?
Since the Pope has spoken ex cathedra only twice in the last 100 years or so, in both cases to clarify a point of already-existent doctrine, I wouldn't think this is something you or anybody else need worry about.
Seriously, marajade, your misapprehensions about the Catholic Church are SO profound and disturbing (and so completely unfounded on fact), I think you need to sit down with a good introduction to the Church and learn what her teachings really ARE. You're wasting a lot of time and effort attacking things that aren't true in the first place.
May I recommend this excellent if somewhat old-fashioned book? It is rather long, but extremely readable, and I think you would find it very interesting:
Then at least you could criticize the Church from a position of knowing what in the world you were talking about.