My partner had the AZ vaccine three weeks ago and was quite poorly with a headache afterwards. A week later he went to the doctor and had bloods which were ok but need repeating due to some dodgy blood results he's had in the past. The headache eased about two weeks after the jab but he's woken up this morning to say it's back with a vengeance. If you're still reading, thanks! I'm wondering if anybody else who experienced a long term headache after the jab had it reoccur like this? Obviously it's happened on a Saturday so we can't ring the GP - typical!