Hi I'm just wondering if anyone else experienced an horrific headache after having the Oxford jab? I had it yesterday and started to feel unwell last night ( I was unwell after my first jab but flu like symptoms) but towards 10pm I started to get an horrific headache and it's still there now, im laying in a dark room and have been sleeping but the pain even to turn my head is horrific. I'm sure it's just a normal side effect but has anyone else experienced a headache like this? Thank you