I had mine at 11.30 yesterday, along with DH, 11 weeks after the first dose. With my first dose, I had a slightly achy arm and mild hangover symptoms. My arm started hurting yesterday not long after the vaccine, and by late afternoon I had a headache, although that might have been caused by the thunderstorm rather than the vaccine. I was tired in the evening, and dozed on the sofa from around 9pm. When I went to bed, my arm hurt enough to make undressing difficult. I woke up at around 2am because my arm was very sore, and DH woke up around an hour after that with a fever. He took some paracetamol and went back to sleep. I stayed awake, with a mild headache, muscle pains, sensitive skin, mild nausea, a sore arm and thirst. I got a couple of hours more sleep. By 7am DH's fever had gone, and he is now mostly tired with a slight headache.
I am feeling rough, but my no means dreadful, and am about to take a painkiller for the headache and achy muscles. I can't use my left arm properly, but it doesn't hurt unless I try to my my arm from the shoulder or bump the muscle.
So my symptoms are definitely a lot worse than they were after the first dose, but at the level of moderately bad hangover, or severe PMS rather than flu.