I'm so glad for your answer Dr. Vinod K Joshi.
There are so few persons one can ask consultation in such a sudden situation like this. It is now a bit over 2 am in Finland on monday morning and you can't reach a doctor here before 8 am on Monday. And sometimes not even then, because everyone is calling, so it might take several days to get to see the doctor.
And what I fear is, that the doctor says that I should just wait and see if the lump grows more and only then come back. Because I want to know as soon as possible what this is!
Of course this looks much more harmless than many of the pictures I have found concerning mouth cancer on the internet, but I'm still scared
By the way, there has been no trauma in my mouth. Teeth are stable and ok, as well as everything else.
A new picture from today