On Sunday I did 200 km on my bike, which is much more than ever
before. I had some trouble with the groin area, and still after
two days, parts of my body feel numb, and seems every time I sit
on the saddle there is some nerve that gets pinched for a sore and
sorta burning feeling.

From what I understand this is normal and will go away in a few days. If its
still numb after a week I would make an appointment with a dr just to make
sure. Chances are, if you make an appointment now, by the time you get there
you will be ok.