Thought that I would share my experience from getting the first dose (Moderna) last week if there's still someone here who is yet to get it.
Actually, side effects were a bit worse than expected - really sore arm for about two days, like I almost could not lift it above my head, likely due to internal swelling. Slight fever culminating during the second night. And then the next morning I woke up and soreness was gone and I felt almost completely fine. Maybe just still a bit tired.
Now after a few more days I think I am back to normal self, but I feel I lost a bit of my shape during those days, similarly as if I had real illness. I don't complain about the above - I think I understand why these side effects are almost desirable. But I know quite a lot of people who did not have any, so I was maybe a little bit surprised that they developed in my case.
Anyway, I am glad and grateful this first stage is behind me and I hope all of you guys who want to take the vaccine will get the opportunity soon!