I didn't have any side effects from the second BioNTech dose, thankfully.
Dunno if it was a different needle or if the incredibly charming med student that gave it to me did something different from the fella that gave me the first dose, but the actual injection hurt like a *****. However, no bruise this time, arm hurt for half a day tops and it really was a more like a case of mildly sore muscles after a workout, and also didn't have the feeling of a slight case of the sniffles again like with the first dose.
Well, I did sleep like a brick again. Not the 15 hours after the first dose, but still a good 11. ?