Fed up today

I don't know if it's a reaction to being pleased with my progress yesterday or down to the headache I ended up with last night, but I've been in a foul mood all day today. I've had my eye covered since lunchtime - I had to go out and it was sunny again - and I'm feeling really frustrated by how light sensitive I seem to be. I'm due back in the office next week, and despite being bored rigid at home alone, I'm not looking forward to it...