Thanks, the side effects for the second dose were less than for the first. The day after I was a bit headachey and lacking energy. After that I was fine. I'm in the middle of two weeks of vacation anyway :)

The mixed vaccines became standard recommendation in Germany at some point, for people who had AstraZeneca first. I think it was discovered that an mRNA vaccine after AstraZeneca is at least as effective as, or possibly even better than, two times AstraZeneca and has lower risk of thrombosis.

And I got the AstraZeneca as the first one because it was the easiest to get at that time. This was partly because "nobody wanted it anymore" because of the cases of thrombosis.