I had my second dose of AZ at 0900 yesterday. Didn’t even feel the needle go in, felt absolutely fine all day. Fell asleep about 2200 as normal. Woke up an hour later feeling a bit anxious, and started shaking violently and uncontrollably. Had to go to loo urgently (sorry if tmi) - which was quite difficult while I was so shaky - as was walking there and back. I sat up in bed feeling like my body was possessed - like a scene from The Exorcist - and after about 15 mins it stopped as suddenly as it started. I didn’t feel hot or cold, though my back/shoulders/neck ached afterwards from all the shaking.
I had a similar thing many years ago after taking an anti histamine in the US so I think this response is me, not the drugs.